Do Cat-back systems need U-bend replacement?

If you get a cat-back system (GMPP, SLP, Borla), do you also need the U-bend replacement, or is that part of the cat-back system.

Probably a stupid question, cat-back probably means cat-back, but I dont want to order too much stuff.

Thanks

nope,

catback should bolt up to the flange that is after the ubend.

yep, ripn is right you do not need one to have a cat back exhaust. i'd get the borla exhaust, you know it's gonna be amazing quality! i got a dynomax and it's pretty pimpin but borla is sooo great!! if you want to know what a ubend looks like take a look at my site. i had one put in after i got my exhaust on. (it took me a while to find someone who would put it on)

My 2000 GT (http://www.cardomain.com/memberpage/385234/2)

If you are going to invest in the cat back you should either get the ubend replacement or high-flow cat.

its not at all necessary, but a good aftermarket downpipe, u bend replcement, and hi flow cat. together will bring about 8 more horses to your front wheels. If you want big, loud exhaust id go with the loudmouth, or if you want a little more rumble, but not too much id go with the gmpp.