Newbie: i dont like Custom Cat-backs

Sorrie for comin off like a jerk i jus had bad experiences wid those.... as of rhye now i got those black leak spots thats at the weildin points and i get horrible gas mileage cuz it leaks.... well thanxs for welcomin me im loookin forward to learn more stuff... I'm going for the sleeper look hoping ill be able to do a Type-R head wid a ls bottom wid a Drag GenIII turbo kit... so im plannin to do something unique and interesting... hehehe