[ARCSinAK]

I'm so grateful for all of the advice. Lucky to have this community.

I pulled valve cover, established TDC on #1.
Got the timing dialed for the first time in a long while.
Took the "Tarpa" out for a test run, she ran better than ever. SOOOO Stoked.
2nd test run dialed in idle, mixture and timing a bit more by ear. Dam near Brazilian Smooth.

Now need to solve the on going do I need a MSD tac adaptor or not mystery. Currently no tac.
I'm running pertronix no points. If I just touch on and off a jumper from the purple and black wire in the original 3 pin harness to the negative side of the blaster coil I get intermittent bumpy tac readings. If I leave it connected nothing. If I connect the wire from the tac to the "Grey" MSD tac output wire nothing. ???????