Welcome to the forums. GTO is a monster! Now, what kind of car are you looking for? If you are used to GTOs and looking for something similar, I will highly recommend you to get domestic muscle. But if you are looking for something very agile, responsive and well handling car, then 370Z is a good choice. It won't have the ungodly low end tq like the LS engines (VQ37VHR is a rev happy engine). You almost have to go above 3500 rpm to really feel the tq. But once you go past 4000 rpms, it'll put a smile on your face
. I did drove domestic muscle for a while but once I drove the 350z and got spoiled by it's handling and power(well mostly handling), I never went back to domestics.
Feel free to ask any questions you may have.