There is a factory 383 mod top cuda here in Panama city. I was told that it was the only 70 Cuda Mod top in existance? Needs a full restoration but hey, he has got it. i think that you can see pics of its current condition on www.emeraldcoastrestorations.com
Karl's car is not the only one. As Barry has said, the Hemicuda should be seen pretty soon. Hopefully a few others too.
Only Plymouths were Mod Tops. The '69 and '70 Barracuda/Cuda and the '69 Satellite.
The '69 Darts and Coronets and Super Bees were Floral Tops.
The '70 Fury was only called a Patterned top while the '71 was called a Paisley Top.
Other than Gator Grain which was black vinyl died brown, there also exists Green Gator, Tortoise, Lizard (often called snake skin) and Basketweave tops.
Also, the '71 Imperial has an anomoly with the Burgundy vinyl top which faded into an odd pattern.
I think that's all the tops I know of. Oh wait, there's also an Aztec top.