[Dumpling]

Most racing series attempt to LIMIT power and performance, attempt to keep everyone on an equal basis power-wise, making (theoretically) the driver's skill the determining factor in the outcome of the race.

I can't imagine any driver, Trans Am or otherwise, saying "I've got enough power in this car, it's enough".

Why don't you want as much performance as you can wring from whatever engine family you choose? Bore it, stroke it, cam it as big as you're willing to put up with. JMO.