Recently moved from California to Florida with my 68 Mustang. First two months the car ran great. Then one day (while driving) the engine started running very erratically. Was throwing out studdering Power, even at constant throttle. Then died all together when I clutched for a red light. Was able to limp it home by feathering the throttle. Dove into it a little bit, but haven’t had success so far. Did notice that the engine is now running very rich, and the plugs indicate it with a lot of soot. I did a cylinder compression test with the engine cold and all looks good. I did notice some external arcing on the msd 3 ignition coil and noticed the top of the coil was loose. Replaced the coil and it didn’t fix it. With the suddenness this happened, my guy is telling me it’s an ignition or compression problem. Still have to inspect the plug wires and do a warm engine cylinder press check. Anyone have any common actors that cause my ride to suddenly do this? Car has a 302 with Holley 4 barrel carb. Has an MSD 6AL ignition box with electronic distributor. Getting frustrated with my ride broke in my garage. Any tips?