[MusicMan70]

The correct "second" seat should be the long 3 passenger one and you should only have slider windows in the middle and solid glass in back (sides).

60-66 thanks for the info showing that the "Third" seat option comes with the sliding rear windows.

My 61 has the bolt-down style seats, but they can be interchanged middle to back.
I believe the short 2-passenger seats are tougher to find. but both do turn up now and then.