Stop in for a cup of coffee

Neutral safety switch or bad ignition switch, but since it started fine with the slant 6, I would lean toward the neutral safety switch...

Keep in mind that there are 3 different neutral safety switch roosters in the trans and you have to have the proper switch to match the rooster for it to work...
yeah, I think it is, I took the one out of the slant transmission and put it in place and it still does not work. I tried to start it from the solenoid and as it turned out the spark plug wires are **** and were giving weak spark. SO it is vacation time and I will continue messing with it Monday when I get back.