Ok so I called a local muffler shop they are suggesting new pipe from the y widening it to 3 inch into and out of a magnaflow muffler with a single out. Would this tubing be too large? please let me know I don't want to loose torque or hp thanks.

 

isn't that what the thread right next to this one is about?

https://www.f150online.com/forums/sh...d.php?t=247636

 

Here's a simple way to get it done right.

Print out the pictures by GrandA&T Perform in the "it's the pipework thread" and take them to the muffler shop & tell them that's the way you want it. (unless you want duals).