I recommend the Nelson 52" if you want no drone when under load. It is straight through, and quiet as stock. I have the 40" Nelson in this truck, with cat on. I do get some drone under load.

 

Cool THANKS! Where is everyone getting the D/N's?

 

Guys, will the Dondaldson bolt in with out elbows. looking at fisherguys pics there appears to be an elbow up front.

 

The factory muffler is offset, if you replace it with a straight through muffler you'll nedd an offset, although when I was checking into it some people go without, the muffler would be on an angle though...

 

These donaldson mufflers, people that are running these 51"ers are you still running the kitty or is this straight pipe? I want to get rid of the cat and muffler and get a straight thru 51" donaldson, but not if it makes it real loud. Anyone? I dont want to sound like my 02 straight piped dodge sounded like in the cab. It was crazy loud.