We keep the scope small on purpose—so the standards stay high and the work stays personal.
You’ll get straight answers, clear options, maintaining the priority of a strategic work plan:
Identifying what matters now, what can wait, and what costs more if you ignore it.
and the risks of ignoring the needs of your vehicle.
We never oversell needs. We protect our customers from money pit projects.
And we treat every car like it has “OUR” name attached to it because it does.
Service That Respects The Era—with today's technology.
Including the Fabrication of all Exhaust Types for All Vehicles, in Addition to the Installation of Suspension Systems, Including Hydraulics.
Buying, Selling, Personalized Vehicle Consignments.
Soneff’s Master Garage opened in Downtown Denver in 1965. The city changed around us, and we moved with it—but the reputation stayed the same.
For decades SMG has been a place where vintage and specialty cars are made to give a customer more enjoyment of their vehicle. At SMG the cars are properly serviced, stored safely, carefully worked on and always appreciated.
A classic car is more than metal or carbon and paint. Its NOSTALGIA that you can touch.
Our motto is cars for fun. We want customers to enjoy their toys by making them dependable drivers vs. trailer queens.
"These cars were made to be driven—washed, polished, and shown with the hood up. The best classics aren’t locked away.
They’re kept alive."
~JAY SONEFF
CHEVY
Service That Respects The Era—with today's technology.
We keep vintage cars dependable, drivable, and correct. From diagnostics and drivability to suspension, fuel systems, rust repair, and fabrication—our approach is methodical and straightforward.
We install the systems that make these cars safer and more enjoyable to drive.
• Vintage air conditioning system installations
• Conversion of older air conditioning systems to currently approved systems and refrigerant.
• Power Disc Brake installations for all types of vehicles
• Power steering installations.
• Conversion from carburetor to fuel
Our team performs the following types of services:
• 31 point mechanical inspection
• Fit, finish and rust inspection
• All fluid changes and flushes
• All brake system service and repairs
• All suspension repairs
• Scheduled maintenance
• 5 perimeter adjustments on older vehicle.
We enjoy improving and transforming our customers cars.
• Complete drive train rebuild by our proven machine shops coordinated by our Team
• Complete suspension rebuilds and/or upgrades
• Disassemble, restoration and re-assembly of vehicles
• Complete body restoration including minor and major rust repair
• Complete paint work performed by our Team. Full paint work performed at our offsite booth
• Fuel delivery system repairs including gas tank, fuel lines, carburation and auxiliary pump systems
• Rust repair for Window frames, Door Strikers, Hinges, Doors, Hoods, and Floor Pans.
We can build the vehicle to any level.
• Off Road vehicle work including roll bars, seat belts, lift kits, steps, soft top install,
• Complete drive train swaps requiring both minor and major chassis and body restoration
• Body panel replacement due to damage, poor fit, rust or modification
• Engine builds both minor and major
• Transmission swap outs from manual to automatic or upgrade to customer goal
• SMG performs the installation of the following pre-fabricated panels:
Trunk Pans, FloorPans, Roofs, Front and Rear Frame Rails, Torsion Bar Supports, Inner and Outer Rocker Panels, and A-Pillars
EST. 1965
Soneff’s Master Garage began in 1965, when John Soneff opened a storage garage and small mechanical shop in Downtown Denver—back when the Denver Tramway Building still stood. When the city changed, we moved. When development came, we moved again. And with every relocation—from Welton to California to Curtis—we carried the same thing forward: reputation, relationships, and the belief that a good shop is built one honest job at a time.
"Took them my 1970 Bronco after wrecking it on black ice. They put it back together and restored some other things I wanted done (including a new paint job and adding vintage AC). I would recommend them to anyone and everyone. Their work was fantastic--everything done to the highest quality. They were friendly, responsive, and honest. Gave me options for everything done and didn't pressure me on any point. Pricing was excellent as well. Jay was awesome to work with. Just a great experience start to finish."
~HL Rogers
"Throughout this entire process I feel like they went well above what was required to ensure that the expectations that they provided were actually met and the promises that were made would be delivered upon. The work was quality and timely. It was quite amazing to see how clean and orderly their shop was kept compared to some of the other shops that I reviewed. I will not be taking my car to any other service shops other than Soneffs Master Garage, I have more repairs to make and actually look forward to it. I can't recommend them highly enough to all my friends and those that are closest to me. It feels great to locate an honest and reputable service shop for my vehicle. Completely put any reservations about getting repairs done at ease. I hope it does for you too."Thanks again Soneff's!!!
~Quincy Dancer
"I'm so damn glad I found this place! Recently bought a '69 442 that needed a shit load of work. These guys do it right. The car is currently in for its second round of work. Irvine is an all around dude, super professional, honest and I'm so glad he's there. Briefly met the owner Jay, extremely nice guy! I definitely see why y'all are in business! I will be a forever customer. I 1000% recommend Soneff's to anyone who needs honest, quality, reliable and affordable work done on their pride and joy!"
~Peter Lenicheck
EST. 1965
Jay Leno visited the shop a few summers ago. Jay and Jay spent the entire day together talking cars. Jay L later invited Jay and his wife to his Show that night at the Paramount. Jay did have interest in buying one of SMG’s Hudsons. Unfortunately, it belonged to Jay’s Dad and was not for sale.
