Rambiss,
It sounds like there is opportunity to improve everything in this shop a great deal. It sounds like the current owner has lost his fire. I am curious as to your background. Have you been in the auto repair industry? I did not see your previous post. When I purchased my shop I had been the service manager for 10 years. The transition was so smooth the client base did not know that ownership had changed. The first thing we did was clean up and get rid of all the old clutter, junk engines, old dead inventory, old obsolete equipment. We spruced up the image by painting, cleaning and installing a computer system. The techs were happy and were enthusiastic as well.
If you need new staff this is a company I have used http://www.actautostaffing.com/default.asp
Mike