Every one of the 4993 Cobras, and 107 Cobra Rs, had a "G.T.40" 5.0L engine from the factory. All of them have a VIN that starts with 1FACP42D. All. Of. Them.
D = G.T.40 5.0L engine
All of the 107 Cobra Rs had the "radio credit option" (radio delete), code "Y" on the owner card and door tag...