FWIW...my dad got a set of Firecores for his 440-6 road runner. They were supposed to be custom fit for his motor and header combination...some too short, some too long. I'll stick w/ making them myself and not hassle w/ shipping old wires back-n-forth and having downtime.
I hear yeah!
It really doesn't matter whether you win or lose… as long as you look good doing it!