Fast Frog, why not get the LS1 engine kit from GM Performance? $5659.95 gets you a NEW LS1 rated at 320hp/345Ft/Ibs, comes with injectors, manifolds, flexplate, ECM, wiring harness and warranty! There is alot of HP stuff now available for the LS1. Food for thought. Checkout www.paceparts.com/ under crate engines.
Mark