Does anybody perhaps know what dimensions the autopilot drive belowdeck should have for proper installation? Especially the length I guess is limited. Is for example a drive from Hypro, the ML+4020, with a length of about 75cm (about 30inches) too long or will it fit on our Catalina 36 Mk1 from 1991?

Kind regards,

Floris van Bentum 
C36 Mk1 1991 wing keel