SMP (Standard Motor Products) #69404
Its a heavy duty 8.5mm ignition wire set, cut-to-length (pre-assembled) for the 351M/400, that includes 3 different lengths of coil wires (10", 25", and 31"), one should be long enough for the Pantera. The wires are designed to perform with Duraspark I or Duraspark II ignitions.
Good old regular engine parts. SMP has been around since before my time. Not a hot rod part. Nothing to do with SEMA.
The only guys I know that "cook" ignition wires are the guys who run "wide plug gaps". But for gosh sakes, the Duraspark I ignition called for 0.060" plug gaps. So I have no idea how wide of a plug gap they're using if they're cooking plug wires.