Sam, Heres a link to 65Novas web page. He's fixing to put a 292 in his 65. It's also a d*mn nice looking Nova.
After reading TLowes post I'm leaning towards a 250 and Nitrous. If you've read any of the post from our friends in south America, you know the bottom end on the 250 is stout enough.
http://www.63ChevyII.com/the_build/2008/may_june.htmLarry