You could use a larger cam, but don't get to tied up in dyno numbers.... You have a few more cubes than I do and I run a little larger cam.... figure with a 23X/23X cam... you may pick up 20-30 rwhp...
I would rather see you invest in a ported 92/92 setup. And don't hate on the nitrous my friend. Its alot of fun and makes for great insurence.
Nice car BTW... real clean.
__________________ 1999 Black WS6 w/ ~25k miles
| AFR 205s | 230/232 114 .592/.595| Fast 90/90 | N2O | NANO | 9" (411s) | 452rwhp/406rrwtq NA - 540rwhp/536rwtq N2O |