I thought the original show was behind one of the guys house. He had the two story barn style garage. After the show became popular, they moved to a larger cement block building and if I remember that correctly, had a chain link fence around it, was blue, set fairly close to the street. Ones guys name was Sam Memmolo and I can't remember the other guy at the moment. The one was a taller blond and the other was shorter with a beard. IIRC the taller of the two passed away last year. I think it is Sam that still has a show now but with a different name.
Okay...edit... Sam Memmalo and Dave Bowman. I found this
http://en.wikipedia.org/wiki/Shadetree_Mechanic Shadetree, Crank & Chrome, then Two Guys Garage. I think it was Dave Bowman that passed away.