intercooler pipe

[67 ls1 vert]

Anyone know of a good place to buy 3.5" and 4.5" tubing?

I need U bends and J bends. Just mild steel as I am going to paint it anyways.

Some of the places I googled had some but they were pretty pricey.

Thanks

[Flash68]

http://www.mandrel-bends.com/catalog/

[67 ls1 vert]

Thanks... Whats a good gauge for what I am building? They offer different thickness.