Reply to "Sale Pantera Neuvo, 200, GTSi No. 16 of 38"

Johnny,
Cats are only a small part of EPA emissions compliance. For example, tests include engine compartment "vapors" in and around the exhaust pipes, carb or EFI system in both cold and hot start modes.
Feeding from exhaust manifold (read custom made headers) to air canisters might be required. The essence of this issue is, an ICI must "know" what is required to federalize a Ford 302 from scratch. None do because the engine as delivered from the factory to production cars already complies. They NEVER worked on one. No ICI imports foreign cars with American engines. Mercedes, Ferrari et al yes, but Fords? No.
So, even if they research and agree to do it and they don't get it right, you have a real serious problem. I know it can be done, but its gonna cost somebody the price of a car to do it from start to finish.

And, all of this presumes you can convince the DOT committee that the car qualifies under show and display, which I am directly informed by DOT is highly unlikely at best.