ok im looking for some aluminum heads for my 91 5.7 tpi in a chevy truck, the motor has been .40 over, hypert flat top pistons, 9.65 cr, comp cams 212-218, 264-270, 487-495, comp cams 1.52 magnum roller tip rockers, 24lbs, afpr, edelbrock high-flow base lil port work, vary ported slps, port to match plenum, bbk 52mmtb, 700r4 with 1400$ in parts, b&m 2200 hole shot, stock 3.42 think im goin to go 3.23 later or maby 3.73 not sure, i need to pass emissions, im looking at doin some ported aluminum l-98 and running the scoggin dickeys egr kit, whos doen this? i have no air pump and the headers i have has no tubs, i was told i will pass without them, so i will have to drill a hole in one header tube and run a tube to the back of the manifold, should i do ported l-98s or do a different head? just not sure what to do?
also i will be running a nx nitrous kit, 35-150 hp shots not sure what hp to run?