[custom1970]

Sounds like the mechanical pump will probably be the way to go. Going to try the new oil press switch (which we need anyways) and see what happens. At least it might help us keep the project going until we have a chance to drop the tank and go mechanical. I do have a few old working pumps so the hardest part will be the time to do it....
Would be nice to get it running well enough to get to muffler shop.... Hard to tune on open headers....
Btw, we did install a temp mechical oil pump before first start, oil pressure was very strong.
Again, thanks for the help!