Another Mopar Off My Bucket List - Barracuda Fastback

Yes.... on the former, still sorting out, the latter. Msd 6a, non digital box. The alternator died, replaced the batt, v.r.,& alternator. Better, still not right.. Kitting the carb, (a Quick Fuel 750 d.p.) this weekend, ordered a designed to drive plate, to install a four pin GM hei module as back up, for a possible bad MSD box.
Plugs black , but dry....the usual symptoms of bad P.V.....


My experience with MSD control boxes (and what I've always heard from others) is that when they go bad you won't get any spark output. Is it possible you've got the two wires reversed that go to the distributor? They'll still function but will give an erratic signal.