A 96 chassis may or may not have the threaded bush in the chassis tube. Mine didn't. Used small, strong magnet, tape measure, drilled a pilot hole, opened it up, rooted around and... the bugger wasn't in there! Arch made me a bush to sit in the chassis tube and the silencer front bracket is nut and bolted through into the cabin. Not ideal if you are into cosmetics, but works perfect for me, as a Powerspeed system is awesome but quite heavy.