Car #1, the LS-6 car with NOM and then drop in an LS-7 and really smoke some tires. :-)

I'd take car #1.

1

I'd rather stare at a 6500 redline than a 5500 so #1 for me. Hopefully the NOM engine isn't "date correct" or anything other than an easy to replace 4 bolt block so I wouldn't have any guilt in hitting the redline at least 5 times per drive.