Slant 6
19plymouth72,
If you can wait, you can get a slant six w/ tranny even for free since so many change to a V-8 and can't sell them. If in a rush, the $300 craigslist can likely be talked way down. I recall ~10 rebuilt slant engines in wooden boxes sold on ebay a few years ago for ~$500 ea. They were military surplus. If you have storage room, grab such deals when you see them, though few in SoCal have such space.