The fuel pump should always be mounted as LOW as possible and still be protected from road debris. Shields are inexpensive and readily available. Use the proper hose clamps, worm type at least, F.I.clamps are best and cheap. Use an adjustable regulator mounted in the engine compartment so you don't over power the needle/seat on your carb. A good, large fuel filter before and after the fuel pump. Are you going electric because you have not done/have the proper timing cover ? Empty tank will just burn up the pump. Drop-in in-tank pumps are now available and solve all of these problems.