Anyone ever fiberglass a side window shut?

[Flingshot]

I am looking for a Flippac or a Wildernest as a second option.
The way I want to set it up would require a side window on the passenger side but not on the driver's side.
I was wondering if anyone has closed up a factory window with any success?

Plywood and fiberglass?

 

[Heifer Boy]

Either that or you could use foam as your filler piece and fibreglass over that. Sounds like the logical way to go to me. Just make sure you use epoxy resin and cloth and not polyester resin and chopped strand.

Make sure you post up your result.