408 or gen 3 hemi

GEN 3 all the way, you cant touch a massaged 5.7 heads flow with an LA or a Magnum without a full blown port job. 5.7 wrecker Hemi's are probably cheaper to buy as cores than big LA's nowadays. In Chevy terms, why build a mouse when you can build an LS cheaper? Buddy is building a 1300HP TT 6.1 and he's upgrading from a 482 crate Gen2 hemi.