coyled has fitted a 358ci Winston Cup motor into his Cobra. If he doesn't reply here, email him via his contact details here :
http://www.clubcobra.com/forums/memb...o&userid=10215
There are a few website that sell used Nascar parts for reasonable prices. Another option is to get onto one of the Aussie V8 Supercar teams. They should be able to put you onto a "non-current" spec motor for a pretty good price. The compression ratio is already pump-gas friendly, the camshaft could be a little smaller, and it'd want rings and bearings. You'd have a pretty special looking motor with a beautiful cross-ram intake manifold for you troubles though....