Does anyone know the size of the Magnaflow muffler that comes in the bolt on kit for the 05-07 F-150's ?

I am assuming it is the 5 x 8 oval, 20" tip to tip. That's 3" in, 2.5" out, SIDO.

I can get a custom setup if I provide the muffler. Dual rear exit behind passenger wheel with chrome tips for $250 (same style as Harley)