I know where Nashcar is coming from, he is the dare to be different kind of guy. You can squeeze alot more then 500 rrh out of a twin turbo 350, getting it all to work together correctly is the hard part. I would call cam companies, turbo companies, piston makers, and head builders to get their suggestions. Your not the 1st to do this and they probably have a good amount of experiencs in this field by now. I went to our local strip a few weeks ago and walked around, I would bet 35% of the feild were turbo car V8's. Good luck in your quest and keep us posted.