I can't find the cat delete pipes anywhere, not even the tech line at Ford Racing Parts knows about them. However, I can find the muffler replacment and two header types everywhere.
I wonder how fast they will let the car run without adding a roll cage and fuel cell? I don't think you will be allowed to go over 160 without adding more safety equipement than a helmet and 6 point harness.
Black Ice,
I'm asking tech if they will accept the GT without a roll cage/bar for the 150 class like the Vetts & Vipers. That will allow a 165 tech speed. You'll also need a 5 point and fire bottle etc. I've run the 150 class w/ my 95'R tech out for 180. Lots of funnn!