Go with a Termi!!! with a GT, your going to need forged internals if you want to get high HP numbers which will just be another cost! I want to get mine up to 550 600 to the wheels but I will never get it without doing forged internals..
took the words right out of my mouth, then i will feel more accomplished if i make it fast, and besides, all the money put into my car, i would like to have a car where i can just transfer all the stuff over