Some things to remember, guys... Unlike the Jeep 4.0L, my 3FE has two manifolds, one for the front 3 cylinders and 1 for the rear 3 cylinders. Two separate 1.5" downpipes lead to separate side-by-side cats, then to a y-pipe, into 2" pipe all the way back, and there are a LOT of bends on the way...