My Camaro turned sub 11 second ETs and trapped in the 130s on sticky street tires--and did it on PUMP GAS. It too has the convenience of an automatic tranny, and seats four. 750 whp may be a big deal for a V6, but a well-thought-out V8 can do it without C16. Want another example? Consider the '03-present Mustang Cobra. Just over a week ago, I saw an '03 Cobra put down nearly 800 rwhp--and the car's never even had a valve cover off. I was reading in one of the Mustang magazines recently, about a guy who's going to pull the blower and swap twin turbos onto his Cobra. It's expected to make over 1,000 hp with unported heads and intakes. That motor was built for boost with an extremely stout shortblock and free-breathing 4-valve heads. If you want to talk potential, I'd say that motor has much more than the Supra engine. As far as the 9,000 rpm redline, V8s don't need to attain stratospheric rpms to make power. As far as the 190? mph top speed, I have no desire to drive 190 mph on public roads.
The Supras are nice cars, but let's keep things in perspective. Ultimately, the Viper, or an American V8 will eat them alive. In the end, there is no replacement for displacement. A smaller displacement motor(4 or 6 cylinder), with forced induction, can embarass a naturally aspirated V8 or V10, but, assemble a well-engineered forced induction package for the larger engine, and the smaller one is hopelessly outgunned. If this wasn't true, V6s would be competitive in the upper echelon of NHRA drag classes.