HKS intake,alluminum pullies, computer, hks exhaust. i have a '90 n/a 2 seater 5 speed. I've beaten gst's in 1/8 and 1/4 mile, they do not get enough traction and after the top of 3rd gear they are usually at least 1 or 2 cars behind. now if you want to beat a gsx get nitrous and it will be no problem.