Greetings and welcome to iBoats . . .
If you Google "1984 Invader Boat Brochure" some stuff comes up, but not much.
Stuff like this . . .
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If you know the specific model, that also helps in the search. Generally there was not a lot of info published for boats 'back in the day'. Maybe someone has info at home in their files, but usually the Internet is the best place.
