I almost tried that cam, but I ended up going with the 20-740-9 instead (XR286R):
Basic Operating RPM Range:2,800-6,800
Intake Duration at 050 inch Lift:248
Exhaust Duration at 050 inch Lift:254
Duration at 050 inch Lift:248 int./254 exh.
Advertised Intake Duration:286
Advertised Exhaust Duration:292
Advertised Duration:286 int./292 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:0.576 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:0.582 in.
My motor is close to the same as what you have listed, except I have a little less compression (10.89:1), single 4 barrel carb (750dp), 1 3/4 headers, and my car weighs a little more. I use comp 939-16 springs with this cam set up at 1.85" (~185lbs seat and ~465lbs open). I have run the car hard for 5 years now with this combo, still going strong....just your "average" mid 10 second street car :D. She went 6.76 @ 100mph in the 1/8 this fall, and I guarantee she will go faster this spring with some new tires (the current tires are 3 years old...over 200 passes and at the bottom of the wear markers).