mwahahaha. How does 705 cubic inches sound? They have a 760 motor too. Do you have 50k to blow? lol.
http://www.steveschmidtracing.com/ssr_009.htm
okay back to reality. 500 cubic inch cadillac motors are fairly easy to come by and make good power. 502 and 572 chevy kits aren't all that outrageous either.