You can make more. I made 330/355 at 8-10psi. PI intake and bassani catted X and catback, powerpipe, and accufab tb/plenum.
Now I ported my NPI heads, and have crower stage 2 blower cams, added bassani headers, forged S/B, and a 2.8 RR pulley and am now at 515rwhp/475rwtq.