there was a neat place called norm's rod shop in the yellow pages. i went there once, and they hada few motors, a tri-five, and a few other cool cars and early roadsters going on. they were where beaver ruin and 29 meet, and beaver ruin turns into arcado road. you go over the tracks, and it's on the right a little ways after. you'll have to look them up and double check to make sure.
as for that auto clinic... man, i pass by that area often, can't believe i never saw anything there!