ur 2g exhaust mani is perfectly fine, ive seen some high horse powered cars with it, umm if u dont have exhaust get that with the downpipe. not worth gettin the downpipe without hte exhaust (my opinion) umm if u got a new clutch and flywheel that wouldnt give u and horse power but it will help out alot compaired to the stock clutch if ur goal in the future is more and more horse power. do a lil research on ur car. ummm idk just my .02