Engine sputtering at about 65

LOL Thinkl the cabled wire is the coil wire goes to the center of the cap then two wires to a plug? Then it is electronic.

Yes, the coil is over on the fender wall, which is another reason I considered just swapping it for an HEI, since this is an unknown distributor AND it's messy with another cable run over to the fender, I thought for not a lot I can upgrade both and clean up some of the mess in this engine bay.