Sadly, we have had a very large setback. The loss of spark happened because the distributor shaft stopped spinning. The distributor shaft stopped spinning because the spindle on the oil pump sheared off some teeth and caused the gear to be rounded off on the cam shaft. The oil pump that was installed from the motor shop was a civilian oil pump, and not a military oil pump. It seemed to index in when we put the distributor in, but it was probably just dumb luck (or not so lucky). Pictures and further explanations to follow. I cannot stress this enough, YOU CANNOT SUBSTITUTE A CIVILIAN OIL PUMP FOR A MILITARY OIL PUMP ON A MILITARY DODGE 230 ENGINE!
After about 60 seconds of extreme disappointment, I have accepted this and I am going to persevere, it just won't go to the air show this weekend. We'll look for a new cam and oil pump tomorrow, and this is a good learning experience. Honestly, we probably should have pulled the oil pump out and looked at it at the get-go, rather than trusting that the motor shop had put the right one in. Hopefully somebody else will be able to learn from my mistake.
And here I was thinking I was going to paint "Semper Fi" on the truck and have it all ready to go pick up some cute Marines.