Four-Speed Pedal question

As far as I know, there are 3 different pedal types for A-bodies; early A, later A, and later A 340 pedals. The 340 pedals were just a modified later A pedal set; you can use it on any engine combination. I believe at one time Herb McCandless would modify later A non 340 pedals for you to 340 pedals for a fee.