I can't flattrack my 535, but I'd be willing to run ya on a straight track, preferably a smooth one. We could even bring out the 400 Cheetah.
As far as torque, my Cheetah made 60 ft-lbs of torque on the dyno over a wide rpm range. I don't see that running it on a flattrack would make sense anyways, can't keep the front end down with a +12.