oem parts...
exh manifold
primary's 1.40"
collector 1.75"
downpipes 2.25"
4 cat converters
catback, merges into 2.75"
resonator
muffler

here is what i have in mind, i think this shoudl suit everyone by makign everythign flanged to swap in/out, it will most liekly be 3 bolt flanges but i coudl do it all in vbands but that will get expensive quick at $100 per flange pair. depending on which flange setup we use there may be a flex section or 2 added into the mix.