Mystery 96" Beaver Help
 

Good Afternoon,
I've gotten a balsa Beaver with a 96" wingspan. Unfortunately I have no details on the unit itself. My goal here is to strip off the grey covering and repaint it. I also would love to know what parts I need to get it airborne again. I've attached a few pictures to get an idea of trying to determine what type of beaver this is.

Edit: I'm not allowed to post a picture yet....?

Pieces I'm missing:
Wing spar rods - not sure what these are supposed to look like or how they attach to the airframe.
Engine cowling

Any info is greatly appreciated!!
Thanks,
Dan