gbauer,
It might be hard to go much bigger, I have your trans down in the Gonk with a 1900stall which is kinda tight. So too big of a cam will hurt it. I tried a Comp264S solid cam,
220-220-108 .513 .513 gross lift
Torq 256 at 3700
Powr 232 at 5100
Shifting at 5400:
2.23
9.93 at 69.6
15.67 at 84.9
Is .17 worth a cam swap? Depends how bad you want it, that still puts you at a disadvantage to Mark but you have a more streetable cam too.

I think it would take more converter and/or more gear to make a bigger cam work.