o.k. so I bought me a sweet 04, & it has the 3.5" pipe from turbo to the muffler, my question is, what do I have to do to change that to 4"?? seems I've heard somewhere that swaping the cast elbow in from an 04.5-05 would allow me to put the later 4" down pipe on. anyone know for sure??? thanks, & great to be back!!!

 

here's the info

https://www.dieseltruckresource.com/...d.php?t=293093


Joe

 

Thanks, got pretty much everything I need except the extension pipe between the downpipe & muffler. Can anyone tell me how long that is??