I already posted a thread about what to do, but to no avail...I am dumbfounded on which exhaust system i want to install.. I want to go si/do the rear. The only problem is I don't know which one to get. Performance is the main thing, I want it to sound good, but not to the point if a cop is having a bad day he'll pull me over. Also money is tight i can't be filling the tank up all the time, so efficiency is greatly appreciated. Please help me out, which one should i get....Please don't even mention gibson!!!