So what's up guys? I just bought my first Celica and decided to join this forum to meet new and local people that own these cars and get some advice. I just bought an 02 Silver GT-S and I had a question regarding what and when should I upgrade certain parts to my car. I want to eventually end up installing either a turbo or supercharger in a year or two but I wanted to know if I do have that in mind, should I upgrade with bolt ons before or after the turbo/sc? Like should I upgrade my intake, exhaust, headers, etc. I would also like to know where I should buy these parts (Amazon, Andy's Auto, from the dealership TRD). Thanks for the advice guys!