what are the fitment issues with using a 04 magnaflow exhaust on an 07? I know the newer stuff has larger exhaust already, but I found a decent price for a used exhaust locally that is a 4" cat delete and magnaflow pipe all the way back

 

03-04 was 3 1/2" 04.5-07 5.9Ls are 4" should bolt right up.

 

CReed is right, if the exhaust is off an 04.5+ youre golden

 

it's the elbow and v-band clamp. 03-04 have a 3.5" exhaust elbow. And 04.5-07 have a 4" exhaust elbow. The turbo end and clamp's are the same size but an 03-04 exhaust won't bolt up to your truck without getting a smaller elbow and clamp. Then it isn't worth it. I switched to the bigger elbow so I could run a 5" down pipe, terrible time finding the clamp unless I went to DC.

 

but, while we're at it does anyone know if the hangers are the same on an 03 and an 07? And if so, what changes an exhaust from a single rear wheel to a dual rear wheel? Not trying to steal the thread but it does fall into differences in exhausts.

 

Nope. As far as I know SRW and DRW are the same.

 

Well, yeah well RPM outlet say's different about the SRW and DRW thing. But also, is there any difference in hangers from the 03 to 07 trucks?

B/c I made my exhaust from pipe and elbows and chrome tubing so I really don't know???

 

my guess whould be tip length in the DRW and SRW models from RPM. Yes, that clamp is a pain to find!!

 

good point Revo.. dsl, I didn't think about that.