24lbr's are fine for what you have now. If you plan on porting your heads, intake, long tube headers, and a bigger cam, 30's would be better. Better rich than lean. I would have to say your best bet would be to have it tuned on a dyno with 30lbr's. Good luck. PS it looks like you definitely need a bigger mass air meter C&L 76, pro/m 75,77 or 80.