I picked up an unusual WE 5302 at a telephone show up in Wisconsin. It's got the "guts" of a 302, but a shell of a 500. You find these with either the F or G handset.

This one has the F handset found on most 302s.

This one has the G handset like the one I have. Note how the 500 shell is cut off at the back because the 302 guts take up less space.