Lots of places man. The cheapest I've found is on
www.jcwhitney.com under muffler piping. It is very detailed as well, sizing wise.
www.speedpartsrus.com sell it too. As far as U-bends, search a guy name boostcoolers on ebay. He has the tightest 180 degree radius on a 2.5 inch. Fairly cheap..... Goodluck brotha'
