I've got a NOS catted h-pipe for sale. It's designed to fit 87-93 Mustangs, but will fit Fox T-Birds and Cougars if you install factory 5.0 Stang headers. This h-pipe comes with the air tube that connects the air pump on the engine to the h-pipe. This WIILL NOT FIT an SN-95 Stang.
I'm selling this h-pipe for $150 plus shipping. That's less than half the price a Ford parts department would charge for it.
Sold!