Look up rolling smoke diesel. I don't know if they make stuff for the Powerstroke but they have very affordable Cummins' exhaust. I have an MBRP system though and it was of great quality.
Worked great. And the powerstroke guy that installed it for me said it was the best fitting 6.0 exhaust he's ever installed. 4" down pipe didn't hit shit.
thanks guys for the thoughts. as for the exhaust banks shipped me the wrong one. they shipped the 7.3 not 6.0. i dont know how you could fuck something like that up seeing as how everything else they shipped was for the 6.0.