My Goldberg cub, used in my avator, is done as an L4. It doesnt have the greenhouse canopy, but neither did the full scale it is modelled after. I found several pics on the internet of this particular cub. It was one used in the Pacific theater during the early part of WW2. This model is a very good flying version of that Cub. I have a Saito 80 4 stroke engine on it.