I currently have a lsx376 motor in my 90 Iroc with 2" longtubes, high flow cats,160 thermostat and cai. I have a disc procharger from my last setup I would like to use from my last set up if possible. Any recommandations on how much boost on pump gas I can go with? The compression is 9 to 1 forged pistons. What size injectors do I need? Is a slp underdrive pulley ok? I was hoping for around 650rwhp on pump gas? Suggestions please.

 

Im running 15psi on my 370. Made 780rwhp last time on the dyno. I had 60lb injectors, but I just bought some 95lb high impedance.