I have a 94' GS300, the canisters are aftermarket, but the rest of the piping (and cat, etc) are all stock. I was thinking 2 1/2 and a high flow cat. I need more flow!! Any suggestions, and also anyone have that setup that they can sell me and if so how much. Thanks, Matt

 

go with custom piping and a cat-back exhaust... i am unaware of any JZS147 downpipe and cat... plust ur turbo is probobly different place then the GTE one in japan