Switch I linked to from AUTOZONE in last post is incorrect thread. I'm surprised nobody has come up with solution, given the many discussions here on WEBER/electric fuel pump conversion.

At this point, I'm inclined to plug my existing sensor hole and tap/thread to match one of the many safety switch thread sizes w/PSI (low) ratings appropriate for this motor. I've put a lot of time/$$ into rebuilding this old truck for long term reliable use, and really don't want to 1/2 ass anything this close to reaching that goal.