Just go to Napa and get there best coil, I'm running one with the electronic conversion kit with a chrome box, can't tell the diff in performance from the MSD blaster II i removed. BTW make sure your giving the coil 7 to 9v while running.
X2!! I have more than one original mopar coil that still works just great after 40 yrs of service. Back when I was racing,I saw many GM cars with mopar coils. Even those yahoos know the mopar coil is extremely reliable.