Supras are wonderful cars the 2JZ-GTE engine is almost or nearly bullet-proof. There are chances that you may brake boost, but you gotta be careful. To tell you the truth Supras are heavy, traction is horrible, handling is not so hot, and finally the parts are expensive. An Rx7 could rip it up if its properly tuned. The question for you is how much money do you have, how much do you want to put into it, is it going to be a daily driver etc ? Correct me if I'm wrong
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Dont get me wrong Supras are monsters when tuned