Finally, I don't know why people fool with the old Mopar electronic ignitions, especially paying ~$200 for new setups, when an HEI type is much better, simpler (no ballast), and very cheap if you use junkyard parts.
ErrÂ…? 4-pin module is what's needed. Perhaps the 8-pin item can be made to work, but there'll be extra terminals throwing confusion into the hookup. I'm not aware of any advantage of the 7- and 8-pin modules over the 4-pin items; AFAIK the extra pins are for extra engine management functions not readily adaptible to an old carbureted car.