Just picked up one of these "old timers"; has a 2nd motor installed, with diode-controlled back-up lights and wire handrails through out; pretty cool model.
Can't find any info regarding what this model was based on: any guesses/thoughts?
OK: it looks like a "CFA-16"; also known as a "C Liner".
I will attempt to post some photos, as it also has the pilot "filled in", with some metal couplers which are not familiar to me...
Mark in Oregon