Rarest A-Body Option?

Here are the mod top numbers. Thet were only used on A bodies in 1969. Total A body mod tops 1090. I would have to vote for mod tops as the factory option.

BH23 Barracuda 937
LL23 Swinger hardtop 48
LM23 Swinger 340 50
LH23 Dart Custom 25
LP23 Dart GT hardtop 14
LS23 Dart GTS hardtop 16