Re: schematics for 1988 Grady White GulfStream 23 foot
Schematics are included in the owner's manuals which are available to download at gradywhite.com. There doesn't appear to be an '88 Gulfstream though ... try '89.
Re: schematics for 1988 Grady White GulfStream 23 foot
Sending a note or making a call to their customer service dept. wouldn't hurt, either. I'd also imagine that there's a GW owners' forum around somewhere.