While I agree that a big block is the cheapest and easiest way to do it, the problem in the last few years has been in finding a rebuildable big block. richmondb, look through the little pennysaver / green sheet types of newspapers that you normally find on the corner at the 7-eleven. Many times, you can locate a 70's car or truck that has a big block in it that is not running and you can buy the whole vehicle for cheap. Lots of early to mid-70's Chevy station wagons had 402 big blocks in them and I'll bet you could find one of these cars for a song if you just look around. Scout around in the back alleys of Jacksonville, I'll bet there are quite a few candidates that you could have for just towing them off.