you want a opinion, well try something that no one else has tryed, something that would be more efficient, and reliable than any other option, that being said with the rise in 'green power' i would try something like that with a older nissan diesel, converted to run on vegtable oil or propane. the older style diesals should bolt in, don't quote me on that though i don't know. if all out power is the goal, then sure go for some domestic v8, but there will be some heavy fabrication neaded in order for it to work. i don't know what your goals or skills are, so its real hard to say ' just get this', and really its your car, so do what you want with it and you'll be happyer in the long run, cause its your project and your ideas, and tryin to go along with someone elses plans or opinion, is really pointless, if you yourself don't truely like it in the long run