stainless works and brian alspaugh are the only sources unless you can find used jeals. jeals I don't think are made anymore nor the watsons.
the B&B can be had for the same price with the x pipe in lieu of the resonator. you can also get them made up by stainless works, and a few other custom folks. the B&B is a pretty aggressive exh with the x piple but man does it rock at WOT
the car will really pick up above 6k rpms with the headers. you will be very pleased.