[James the III]

I'd junkyard crawl for a vac pump and can.. and be done with it..

Unless you are just looking to rebuild or replace the engine.. just because.. then go for it.
But even the vac pump won't fix a bad booster..
new does not = good put a hand held vac pump on it and see if it holds vacuum..
Many oem pumps
ford trucks mod motors (most)
all non hydro boost oil burning trucks
caddy's
g.m. small cars sunbird/sunfire/cav/ colbalt