well most folks wouldn't admit to doing something that stupid. Welcome to the club, We've been waiting for you...
made one of 1/4" wood so i imagine you could copy and glass it it fit perfectly over the 3.0 there is pics on my post for the boat i did the basis wouldn't be bad glassed and done white either, not everyone likes that wood lookdid some thinking...any one ever make an engine cover/dog house using glassed blue foam insulation board and some plywood? i want to go that route so i can have some nice rounded corners and it being light weight.
little update, did an oil change, new oil pressure sending unit, still working on the electrical, carb rebuilt, engine tuned up decently, starting on filling in the little gouges and scratches with some spot putty. got a couple areas that go deep in the fiberglass, but not through it that i gotta grind out and back fill with epoxy and chop strand. found a few small spots where it looks like air bubbles popped in the gel coat, so gotta fill those in with some epoxy...atleast the weather is warming up decently here.
When you say "spot Putty" is that a lacquer putty or resin based? If lacquer if made not work and fall out. Really depends on where, how much and what is going over it. JMHO