I started to look for a LS2 but couldn't find one at my budget price so i went with the Ls1 but if you can i would start with the LS2 they have the updates most ls1's don't.. ie ls6 intake though you can get it from 2000+ LS1. I still think i an get 400hp flywheel HP out of my 99 LS1 even though it doesn't most of the upgrades from the factory. Wished i would have gotten a T56 trans though :?