Muffler help please

I am looking to buy a flowmaster 40 series and install it on my truck. I am wondering what size inlet and outlet and also which offset? Also what else do I need to buy to do the install with no leaks? Any help is greatly appriciated as I would love to order today! Thanks!

 

You best bet is to go to an exhaust shop that way you know its done right and be able to get what you want.

 

Stock exhaust piping is 2.5 " and the muffler is center inlet and center outlet.

 

Thanks you very much!

 

The info; center in/center out w/2.5" does not necessarily mean you can go out and cut/splice and clamp the muffler in and the tailpipe will fit perfect, although a satisfactory fit might be achieved, or just use a turn down at rear of muffler.

Edit: The factory muffler on my 07 is staggered; not side to side, but the inlet goes in on the top, and the outlet is at the bottom. So, if you want to leave the exhaust system stock with the exception of replacing the muffler yourself, a generic fit will need some pipe bending done if you want to use the tailpipe and all factory hangers in the stock locations.

 

Muffler shop for sure. I went with a Dynomax instead but had a welded install with all hangers in stock locations in 30 minutes for $100 total out the door.
I also saved the stock one but haven't been disappointed with the swap yet.