'99 4.6 with fresh manifolds etc, through stock piping to a 14'' magnaflow to a 3.5" MBRP tip

 

Ah I remember this post. I have had a new truck since 2011, here it is.

2007 Lariat 5.4L, stock manifolds, stock cats, Magnaflow #10778 Y pipe & mandrel bent transition pipe, single 3" intermediate pipe, Magnaflow #14419 Magnapack, Another Magnaflow #10778 Y pipe, dual 2.5" tailpipes 45'd, 4"x18" Magnaflow #35117 tips.

 

sounds good