I've got a '73 with same problem but I'm looking at the various replacement part options. I'd like to put in the black one (# 79457that 's sort of shaped like an oval and has a screw on both sides but the parts site say that it's for 1995s or later. Has anyone used this part on a pre '95 boat and does it fit the 73 hole? It seem to be the easier replacement option. Or also, does the White 79458 twist and lock plug work on a pre 95? THanks
Id have to check the part number, but I got my black ones from APS (they were the ones they recommended) for my two SF, a '73 & a '74. A half -round file did the work of widening the hole to make it fit, and that took all of 4 minutes. Some sealant and two pan head 1/2" SS screws finished the job.