Anyone got an old OEM DI/DO muffler taking up space in their shop? I'm in the market. Will also trade my DI/DO magnaflow muffler if you're interested. It's a very mellow muffler, but I'm burnt out on the noise.

 

If you don't have any luck, Get a walker replacement. Most of the OEM mufflers are junk by now.

I did this on my uncles Bronco to replace the rusted out Flapmaster...

Have to measure your pipe size but napa is showing 2 options. Check around for best price.

21437 I believe this will be it
It's a dual 2.5 in going in. and a single 2.75 outlet. 24 inches long

They also show a 21576
dual 3inch inlet. Single 3 inch outlet 28 inches long

 

You might even get a whole NNBS setup for cheap. I paid $40 for mine off of FB Marketplace.

 

Texas weather is more forgiving on parts than the norther states.

are you sure that a NNBS system will bolt right up? any benifit to the NNBS over NBS?

 

Facebook score! 8 lug wheels from a 07 HD with 1 year old michelin defender LTX M/S tires for $325. I should be able to make a quick sale for my wheels and tires and possibly even come out ahead.

1 step closer to having a quiet truck again. Hopefully he shows up with a crew cab classic HD that i can swap exhaust with LOL.

 

It's not the Weather, It's the moisture that collects in the exhaust.

 

The exhaust will fit physically.

You will probably need to add some hangers to support it properly.

Benefits:

It's a 3.5/3.75 setup. It'll breath easier. I would also tack open the flapper valve or remove it altogether.