The cb1100F air filter box is not the same as the R, the R has 1 breather extra.
For the alternator parts you can use the stator and rotor from the cbx400 and cbx550F.
Many small parts have MA3 numbers but are the same as the cb900F parts.
The throttle control is the same as the cb650F.
I have used cb1100F piston rings in my RC engine without problems.