Also, after the horsepower peaked, it hung on until around 6100 rpm nice and flat. The torque curve was VERY flat. I think at 3600 rpm it was 491 and at 5000 was still puttin out 500 ft lbs.
Given the fact that the HP hung until 6100 makes me think that you need more cylinder head flow to really get the most out of your combo. A bigger carb will compensate somewhat although I'm thinking that a 850 should be a good comprimise for street/strip use. That engine seems to want more air and that's a good thing!