my83andme

I appreciate your reply Moses. Keeping the distributor as changing it would be problematic; as i understand upgrading the coil should produce better spark in all RPM range possibly better compensating for the over-bored cylinders, am i correct? If so, what recommendations might you have in the options available? Currently the new spark plugs (Champion Copper Plus) are gapped at .35 (started there unsure of where to set them), Cap is topped off with old but good condition BWD supermag 7mm wires. Need to replace cap and rotor soon. Any recommendations for improvement regarding cap/ rotor, plug gap, and especially coil upgrades would be very much appreciated. Also, new issue is a wiring gremlin i may be starting a new thread on soon if you would graciously impart some wisdom there as i have zero knowledge when it comes to electrical. I appreciate you!

Hey Moses, been searching through and utilizing your past information for a long time, first and foremost i want to just say thank you for sharing your knowledge. So, im finally getting close to starting for the first time in near a decade. The 1893 4.2 had seen better days and got a fresh rebuild which led to being bored over (no clue honestly by how much), port and polished, etc. Its got the older rendition Mopar MFPI.. All that said, i am contemplating better ignition as the parts are already old worn and due for replacement. My question is looking for best recommendations for improved ignition module, distributor, spark plug gap advisement, etc. As the motor has been worked over, im also contemplating an adjustable fuel pressure regulator thinking it may be needed to cure any pre-detonation pinging and further tune everything if needed. Im by no means the most knowledgeable, but doing what i can and hope ya'll that know more can get me up to speed. I appreciate your help.