This would be the 3.5" inlet version. No pipes needed, just the muffler.

LMK
John

 

I'm about to cut mine off and put on a borla but with shipping it wouldn't be worth sending it. I would check with local muffler shop for take offs. I got the complete factory duramax system with installation for $100 from a local shop.

 

I know someone in jacksonville with one

 

Tell me about the sound of the Duramax muffler on a gasser. Quiet?

 

Got one.