Where do you buy header pipe and bends?

[lecktrix]

Hello all... Im getting ready to mock up a twin turbo setup on one of my spare motors.. Its going to be on one of my 41' motors.

My question is, where do you buy header tubing, 45. 90, and U bends? Im looking for 1in or 1 1/4in. Any thoughts? Ive already made my flanges.. Just need pipe.

Im sure ill get negative remarks, but just to put people at ease, its going to be more for looks than function. I will keep the boost only high enough to hear the turbos. Not looking for any HP gain.