I have just purchased a 1975 O'day 25 with a swing keel. the mech to raise the keel is a crank on a post located in the center of the galley. a buddy of mine has the same boat but the line to raise the keel is located in the cockpit which I find more practical. Does anyone know if the differance is a model year differance or if it is an aftermarket installation. Can it be done to my boat. Thanks, Sidworc