IF the outhaul is factory original and IF my memory hasn't failed me entirely, the CALs of that era were basic boats with basic rigs and no internal anything, halyards, outhauls or anything else you can think of. When Bayou produces a picture I expect that is what we will see.
Here is a picture of a CAL 29 outboard boom end of the same vintage (1970) with a partial view of the outhaul.
Photo credit: Ezra Kortz aka systemek on this forum