Anyone know where i can just buy the flowtubes?

My flowtubes are rotted and leaking and i want to replace them. I have a friend that can weld, but i need to get the pipe. I could buy just some regular 2.5in pipe, but i need the bends and the flared opening at the end. Anyone know where i could get this?
 
I am not sure what you mean by flow tubes... but if you mean exhaust pipe, you can just go to your local parts store and they should carry 2.5" Mandrel bent pipes for your car.