okay i come into one of my lhs and i ask wat fuel is better he was like oh ya trinnity thats gefinetly wat you wanna use and that the most expensive one he got and i asked for like a exhaust coupler like a cheap on he gives me one for like 7 bucks i am like dud i dunt need one for that much he was like but you see this associated one is much harder then this one so the material is way different it is so much better. i was like dude give me the parts i need but i didnt tell him that i thought it in my headlol