I want to upgrade the exhaust system but I cant do it all at once. So what muffler should I get? I want a sportier one.

sweeeeeeetttttttttt. i wish i had a supra. http://www.autopartswarehouse.com/products/products.php?year=1987&make_text=toyota&model_text=supra&category=exhaust&subcategory=muffler

at this website, there are a bunch of mufflers for your supra. good luck!!