I'm not sure the rear axle in the Coupe is from an AA Ford truck... the rear wheels appear to be cast-steel spoke wheels, probably with demountable rims... they are not like any Ford wheel I have seen... they DO resemble the wheels that were on several 1934-'37 International C-35 trucks I once owned.
The axle might indeed be AA Ford, but I don't think the wheels are...
The wheels on the trailer look like they are from a '28 AA.
I wonder if the Coupe has a four-speed from an AA ?