Originally Posted by txhatch
I would do itr pistons, gsr p72 head, ge ls/vtec kit, aftermarket valves/springs/retainers, ctr cams, 4-1 header with 2.5" collector. I'd say good for about 180+whp and a lot less expensive then straight up building a ls.
Why aftermarket valves/springs/retainers? He's not going to be reving anywhere past 8k with the CTR Cams, wouldn't the stock GSR valvetrain be enough?