Century Cabin Cruiser Boat Restoration Project

V8 3.0 litre 228hp Mercruiser engine Bought new by my father in law in 1981 now in need of a lot of tlc. Been moored in a boathouse on Windermere since new. Been told tha gelcoat is in great condition but parts of bodywork need attention. Unfortunately, sustained damage in 2015 when lake level rose, boat hit ceiling and broke screen and other bits. Not run since so don't know condition of engine.
Also, recently had to take out of boathouse, again due to rising water level and cabin had a slight ingress of rain water, which i think came in from engine compartment rather than leak from cabin windows etc.Buyer to arrange removal and transportation from Bowness-on-Windermere