This scare nonsense about pumping gasoline into the pan if the mechanical pump fails is silly--because--
The mechanical pump is no more prone to fail whether you have an electric pump inline or not, and--
If the mechanical pump diaphragm ruptures, it will STILL pump gas into the pan, whether you have an electric pump or not!!! You are just as likely "not" to notice the problem, either way.
The body of my old '70, as well as my '64 Polara 426 had thousands of miles on them this way, and I never had a problem.
