Form what I've been able to fing out, when upgrading from a 4A-C to a GE, you shouldnt need to change the fuel lines. Only if you are doing some major work to the engine.
Just a side note to the fuel pump, dont forget that tanks that are for an EFI setup usualy have different baffles in them due to the pickup on an intank fuel pump being different from a non efi pick up. Note i said usualy. worth looking into.