My younger brother just picked up a 87 non turbo supra for $500. We got it from my girlfriends cousin who doesn't even use it. And was selling it for $1000. Anyway, it runs, looks good, but needs work. The exhaust has a leak in it and he wants to replace it with an aftermarket exhaust. Since he plans on getting a turbo engine later down the line, would it be better money wise, to get a turbo exhaust. Will it bolt on to a non turbo supra? Or should he just get a na exhaust.