best cam??

96-3 INT 00-5 EX. Won many nationals and money races back in the day. Should be plenty of these out there as alot of top engine builders used these for awhile. Will make more HP than the 96-3
Hard to beat a 96-3 for short track racing. 07-3 works well also. Properly setting up the cam is probably more critical to your application than deciding between a couple particular grinds.
Consider valve overlap, centerlines, ignition timing, strong fuel signal in the carb, and pipe choice into your equation as well.

Thanks and God bless,
Brian Carlson
Carlson Racing Engines
Vector Cuts
I have found that the cam that creates the best HP on the dyno works well no matter what size track (large or small). I listed the 96-3/00-5 combo because it made great power over a wide range of spring pressures.