Member Trailbeast makes a conversion kit to use the GM style HEI chip to replace to older style Mopar unit.
The difference is quite incredible.
With the correct parts from that GM dizzy, you can do it yourself .
Here's a link to a testimonial vid.
Switched to HEI
Video Link..
[ame="[MEDIA=youtube]Zl0ks2o-DjQ[/MEDIA]"]Mopar ignition to GM style HEI - YouTube[/ame]
hope it helps.