Most rear wings designed for Tamiya F102-103-104 models are a stright fit onto the F109. I am currently running a Benetton moulded rear wing from the Tamiya body kit, and fits a treat.
I have made a Benetton front wing from the same Tamiya body kit fit. Needed a new M4 hole drilled to mount it, and some of the plastic from the upper moulded section removed. Can and will fit with some work
Currently running both of these with a F109 shell.
Measured a F103 shell against the F109 chassis and looks like it would fit fine. I head F104 shells take more work...I have one to try in the future. Suspect F104W shells would give more space.
Also have a Protoform F1 shell to try at some point.