No they actually hold onto a fairly significant garage, and have a ton of amazing restorations that they've done in-house. Jim Mattison personally over saw the 4,000 mile Ram Air II Green Car. It was his personal baby for years. He bought it as a barn find, and once he discovered what it was, he paid the guy more than asking price for it. Good company, and great workmanship. They don't do much in their own garage, but they surround themselves with the best paint/body guys, interior guys, etc. Guys that do the job right. His 76 TA that went for $200k + was amazing.
Here is a link to their FB page with some of their cars and auction events:
