You should take a serious look at the FBO
HRR688D Kit.
It has a built in digital rev limiter, a high output at RPM's and runs well enough to take King of the Track award for Don Gould (the owner of FBO) at The 2016 Madras drags in Oregon.
I deal with him here and there and can tell you he's one of the good guys.
Plug and play to the original Mopar harness, 44,000 volt coil, Ignition box with rev limiter, custom curved and vacuum phased distributor assembled for your specific motor. (eliminates the ballast resistor)
Here ya go.
FBO Ignition Systems