The ports on the left side are for your filter and the guage. The port forward of the carb/exhaust pipe is the outlet and the one aft of them is the return. On my '59 there is a tee at the aft port where the guage tube ties in. The one on the right side of the head is plugged. I don't know what it might have been for.
Ps. That return port is just aft of the exhaust pipe. The port at the very aft end is plugged on mine.
[ 01-27-2002: Message edited by: cletis ]
