Well, I replaced the crank sensor and so far so good. But the problem was intermittent before so time will tell. I am driving the truck more than usual to see if the old problem reoccurs. I'll back in a few days.
Thanks everyone for the suggestions!!
1969 Road Runner J Code
1970 Road Runner VOA
1971 Dart Swinger
1971 Cuda Vert
1973 Duster Pro Street
2003 Z06