I caught up with the thread a bit later than others. Seeing your reactions to the other vehicles you tested, I figured the Supra would be up your alley. Driving dynamics most similar to the GT86 / FR-S, but with a ton more power. The 911 is spectacular and drives itself almost telepathically. The Cayman is fun with great mid-engine dynamics. The problem as you stated is that the Porsches are more tightly sprung them most people think. The Z4, Supra's sister is too BMW like. The C7 Vette rides a bit too "boomer" unless you have the Z06; however, those OHV motors are fantastic - just raw brute torque and immediate power. I wouldn't worry about the "moar" power for next MY Supra. The 1/4 mile trap speeds from various sources tell me that the power for the 2020MY is vastly underrated (Toyota is known for doing this with their high HP cars because of Japanese stuff), therefore I bet the real extra power for MY 2021 will be more like 5-10hp. I would also advise not to use piggyback systems or mod. None of this will matter on the street. And modern cars are nearly fully optimized, unlike a decade and a half ago where quick mods netted you an easy 50hp on top of 250hp. Your car stock will hit low 12s with trap speeds well over 110mph. Most people have no idea how fast (and dangerous) these cars already are.