Is the stock inlet diameter 2.5" or 3"? I'm guessing that any muffler shop should be able to make a 3" fit with no problem? Also, there are so many maggie mufflers out there, does anybody know the part number that will best replace the stock one? Thanks, Matt

 

2.5

 

Replacing the stock one with a maggie of similar length would be pointless, it would be super quiet, get a 14" or 18" depending on the sound level you desire.

 

I was looking for an 18", It doesn't have to be the same length as stock since I am adding new pipes after the muffler and new tips. I don't want it too loud, just want good tone. I don't want it to drone at all if possible. Is there a huge difference between the 14" and 18"?

 

There is a difference, from what you have said, the 18" sounds like the muffler for you. I love my 14", they are sideswept so there is drone in the cab, but I love the sound. Do some video watching on youtube.

 

x2. You'll always find some helpful videos there.

 

Well I broke down and purchased a 12198 Maggie from performance peddler I think I have decided to run both pipes to tips right in front of my right rear tire.

 

You will love it, I have sideswept 14" true duals w/x-pipe, vids below.

 

Great choice with the 14" body. The shop will make it work no problem.

 

im new to the f-150 world, so stock is 2.5 inch so i would like to replace the stock muffler with the 14 in body that you have suggested in your posts, what pt number do i want to replace the stock muffler, do i need the center in and out or offset in center out or center in offset out? to many choices.. thanks for your help.

 

1997 - present truck have 2.5" exhaust.

You will want a 2.5" center in 2/5" dual out 14" body.

part #12158

 

9" Roush/Borla muffler FTW

 

No ones that lucky Man I sure wish I could have got a deal like that.

 

i made a appoitment to get my exhaust put on but after searching i went with a new flowmaster super 40 deltaflow. well see all the clips i heard sound great. thanks for the help.

 

Sweet. Good luck, hope your happy with it.