383 A-Body Valve Covers Question

I am trying to understand the difference in valve covers for a 1969 383 A-Body. Here is what I think I know.
- 1967 through 1969 are all chrome, (440 are painted).
- 1969 passenger side does not have the heater hose bracket and it seems the #7 and #8 wire separator brackets may be positioned differently.
- 1967 through 1969 driver side may be the same.
- 1967 and 1968 passenger side may be the same.

Are A-Body valve covers different than B-Body valve covers?