who sells 3" stainless exhaust?

I know Summit sells their 3" aluminized system...you could have it coated I suppose. Or, have a custom fab job done...Columbia River Mandrel Bending sells 3" stainless builders kits, would that be of any use?

I think Pypes makes a stainless kit, but I don't think it's 3", and I've heard it's a ***** to install...