Magnum 318/5.2L Swap (Carbureted) - Stock serpentine alternator set-up?

On my '00, 5.9 swap into my '71 Duster, I just spliced the wires and have no issues.
Some years have a VR in the computer, others don't I recall '98 as a transition year but I forget if they added the external or got rid of it. I know I've heard of that terminal in the PCM burning up and an external VR swap fixing the charging problems.