I have a, and it’s a 40S, not s40 from 1992
Mine has Whitlock, and the above comment is true. If you find documentation
of any sort, please publish, as none of us older boat
owners have any either.
A better source is the Catana
Owners group at Facebook, which has Stuart Ford, the shop manager at the time, and a kind resource for info about the early builds.
I am guessing your question is in regards the boat in Florida
? If so, the PO may well have installed the hydraulics. Good luck.