It's not a common combination, so the odds of anyone being able to provide applicable cam comparison data is slim.

Not sure if any SFT cam change would show a big improvement without taking the time to try a bunch of different ones. Small port heads, small cubes... it might not "need" or "want" much difference in valve events or lift.

If you're running race gas already, bumping up the CR might be the easiest way to find some additional power across the RPM range.