HAHAHAHAHAHAHA....you said Protege5 and fast in the same sentence....and then you said "twin exhaust".....this isn't the fast and furious days anymore.
ok, heres some help....like ^ he said, search the forums. there's performance, show and shine, wheels and suspension etc threads on here. look at them, figure out what style you are going for, and mod from there. imo I've been on here for a little while, and I have only seen ONE dual set-up that looked and sounded decent. generally, i'd stay away from it.
BUT..... hey, welcome to the forum!