4C if yours is similar to my 73's fuel and vapor systems, four rubber vapor lines from the tank terminate at the vapor separator; one line leads from the vapor separator to terminate at a charcoal cannister in the engine compartment. Long before i bought my 73, adios cannister. I may be getting ahead of myself, though. What style tank have you got? If the nipples are there for the return lines, then that follows what i thought. If not, someone with a system like yours was originally could tell you the routing for sure.
