You can buy an engine hoist and engine stand for about $250, ( I found mine on EBay and picked it up in the Bay Area, brand new!)so swapping an engine in your garage should not be that much of a challenge. If you are expecting to build a 900 RWHP beast starting with a $2k car, you are going to have to pull the motor, no matter what it is. Cars to look for are mid 60s Skylarks, Tempests and Cutlasses. They are not in as much demand as the Chevys, but most Chevy parts will swap into them without much trouble. Plus they are something a little different. FInd one of those cars and then locate a decent big block to build and you are on your way. Good luck with your search.

Pat