Originally Posted By roadrunninMark
You can run the NAG1 too, contact Sound German Automotive for the stand alone controller.


This is news to me.

Could the Sound German Automotive
stand alone controller
also be used on an earlier OBD-I 1995 vehicle
like to replace a 46RH
with a WA580 auto trans?

https://www.allpar.com/mopar/transmissions/NAG1-WA580.html

Replacing a
46RH with 3.21 ratio diff
With a WA580 with 2.76 diff
certainly seems to be an upgrade
Since torque capacity is 420+ ft-lbs
First gear crawl speed would also be superior.