Interesting idea, I've been give some thought to a Mercruiser 471 engine out of a a boat they are 1/2 of a Ford 460, aluminum block, accept any head a 460 will including the aluminum pro-stock head, have a chevy bellhousing pattern and are cheap. Here's one that pushes a 1500 lb. car to 8.50 second run.s in a 1/4 mile..