I have a large 2.5" SS pipe, it's a big U-bend, but you could cut it apart into some 45's if you want. It's the larger pipe near the bottom of the picture (next to my free resonator haha):
http://mitsustyle.com/forums/attachm...chmentid=11047
The bend isn't very tight so I'm not sure if you want to use it or not, but it's free!