TOPIC: Old Mercruiser Installation Drawings

I’m rebuilding a boat (1984 Century Cardel) from the stringers up and would like to have a copy of the engine/transmission installation drawing. Similar to what I’m sure Mercruiser provided to customers and OEM’s when the engines were new. For conversation mine is a 1984 7.4 liter (454) 340 MIE, V-Drive.
Things like weights, dimensions, angles, stringer to engine CL, exhaust outlet in relation to the waterline, etc, etc. Even specs like required air CFM, fuel line sizes, etc, were probably spec’s somewhere.
I’ve contacted Mercury Classic Information and they only go back to the late 90’s which by then had a different trans/V-drive setup, different motor mounts, different exhaust manifolds, etc.
The boat OEM (Century) is a strike too (two?) because they’ve changed hands a few times between then and now.
Is anyone aware of any other classic document depository I might be able to check? Museum? Collector? Former Mercruiser employees? Maybe a 1984-1985 era complete line installation manual?
I don’t “need” it. But I want it.
Anyone?

you posted this on BoatDesign.net