Shift linkage for a 545 RFE in '70 Dart

You're much better off with the 545RFE. The NAG1 is damn near impossible to make operate properly in an old car. The NAG1 has no speed sensor, and relies on the readings to go from sensors on the ABS brakes, to the ECU, so it can tell the transmission when to shift. Unless one has come out since I checked a few years ago, nobody makes a stand alone controller for a NAG1. After you get all that done, then you've got the non slip yoke tailshaft to deal with. I'd rather fix the shifter....lol.