Hrm, for some reason, I pulled out the 787B for that one, though I posted pretty big win margins (15-40.xxx", with no qualifying). Not sure why I went with that.
I'd vote for the Zonda racer, with Stage 1 in reserve.
The Zonda is much better than the Camaro race car even if you are using the Bhp figures above. Personaly though I'd use the TS020 GT1 or the R390 GT1 race cars.