TRP, great pics! This is very helpful...I took the suggestion of trying ebay and picked up a never-used (or so it was described) Gast 1/10HP vacuum pump for $60 (from the pics it looks a lot like yours).

The reservoir tank is straightforward, as is the plumbing, but where can I find a vacuum gage, vacuum switch and check valve on the cheap? Any specific brands or part numbers I can search for?

Thanks again for all of the help!