As said above, you could just get an MSD (etc) coil... or....
I have yet to find an adaptor harness, and I LOATHE cutting a factory harness, but.... you'll find that the grey plug and the black plug are wired in parallel. You *could* cut off the pink (power) and whatever the other one is I can't remember and wire them to a 'standard' coil, then take the matching pair from the black plug and hook them to the same matching spot on the new coil.
(did that make sense?)