[ekrupa2]

Start simple. Had a similar issue and my terminal going to my MSD Blaster coil broke. Had similar drivability issues (very intermittant). Then completely died on me one day. Coasted to a stop wiggled the wire an behold it was broke. The tension of the wire made it looked fine but the terminal was still on the coil and the wire in my hand. Emergency repair, came home and crimped on new terminals, then heat shrink wrapped. Based upon your description it does seem electrical related versus fuel. I would trace yoour whole ignition circuit. One loose wire can break the chain.