can i just stick any tip on my 550 since i have 4-1 headers? whats the big deal with tips? i have a yard that has period collect supertrapp, kerker, mac exhaust tips but i dont know what bike they are actually for. if it fits and looks good on the bike and i can fabricate a bracket its fine right? or is there some kind of super magical thing going on thats why they make bike model specific exhaust?