Hello, I was wondering if anyone knew the part number that they used or someone used to replace their stock muffler. I have a 99 ford F-150 5.4 super cab, I want to get the 14" magnaflow muffler si/so but dont know the part number I should order? Do I want the center to offset one or the offset/offset one, I was looking at their website and they have so many choices, just dont know which part # to purchase.

Thanks
Kris

 

It probably doesn't matter.

A 14" SI/SO is going to be a lot shorter than the factory 55 gal. drum that's hanging under there right now. There will have to be a pipe fab'd and/or bent to patch it in anyway.

 

He's right....I'd just get a center/center and let a shop fab it in. It will fit since it is considerably smaller than the stock muffler.

 

Thanks, is there anyone here running the 14". And how much louder than stock is it?