Outer Limits 4x4 Board

Gas system outer date so im tossing it.trying to put it back to standard fuel system.it runs an electric fuel pump off the long range sub tank to feed the carb.wth no return line do these electric things force to much pressure on the needle and seat in the carb.i wouldnt mind hooking up the standard pump but not sure what lines go where and seeing as it might not of been used since 1990 any chance it would be all right still.

they are for carbys mate onlt about 6 psi