I need to install a new catalytic converter, is there any ya recommend that is good and cheap besides the stock one from the dealer??? i dont want one from the dealer cuz they expensive as hell, but i was looking at that webside zzperformance and they have them but i want to no also if they are anygood?? and like what would i need to get if i do get it since it has like option 1 and option 2. Oh and if it would better getting a 2 1/2 inch or 3inch?? my car is stock so idk if it comes with a 2 1/2 inch or 3inch. ok well let me no ya need some more info, and what ya recommend. any websites that i can look at. and like do i need to buy anything else besides the cat or will it fit it just perfect with the stock one??