I have a factory dual action mechanical fuel pump on my '57 T-Bird. I run an electric pump in addition to the mechanical pump mounted by the gas tank. My concern has been that if the diaphragm in the mechanical pump fails there is a possibility of a lot of gas going into the oil pan which is a bad thing. Is it possible to modify the pump with a bypass tube through the pump to avoid this possibility and still leave the vacuum pump assist part for the wipers working? I could just take the pump apart and play with it but no use reinventing the wheel if someone has already done it. Back in my serious drag racing days I just eliminated the stock pump totally and put a block off plate where the pump went. Worked fine but wipers were less than ideal. Could do that and go with electric wipers but not crazy about that. Sort of want to keep it looking stock but not be stock. That is sort of a thing with me.