i went to the muffler place in my area to check how much they would charge me to do a custom-catback wit a 2.5 piping. The guy wanted to take a look at it cuz he thought that it wasnt possible so he checked it out, and guess how much he said it would cost me???? 350 frickin dollars!!! damn yo does anyone think it is worth it? also, can someone explain to me wat exactly is mandrel bent? cuz i told him that and he started talkin bout the pipe being bent and that he couldnt do it! i thought mandrel bent is when the mufflers stick out to a side?!