Well, it 'appears' to have been an intermittantly shorting fuel pump. I replaced it and have only test driven for about 50 miles on road and a mile off but so far, so good. I ran two extra wires from the dash to the top of the tank just in case I need them later on.
I also discovered a rotted body mount while running the wires. TG for welders and angle iron.
Thanks guys for the suggestions and I am keeping my fingers crossed. BTW, the new pump had the filter rotated 90 degrees. No big deal - just compare with the old one.