I have the 2.5" with street pro muffler, these are straight through with perforated tube & I suppose some kind of sound dampening material.....sounds about like stock.
Chose these as the most cost effective stainless system. Nothing much to the installation although the generic hangers they supplied while very nice were not of much use, I ended up buying other stuff to try to utilize the OE mounting points. The X-pipe forward seemed pretty generic with cutting to be done to the 45-els to get to align with the cross-member openings, the mufflers had special notches to fit in the pockets where the original resonators went. I fidgeted with the fitment of the over the axle pipes & hanger placement a bunch as they seemed to encroach on the shocks....Al in all I am pleased but would not say they were very custom fit except the mufflers....& the mufflers were no things of beauty as they had sprayed the welds of the notched areas silver & the rest was kind of grungy looking, cleaned up well enough for a driver.
Give me a few min. & I'll link some pics.