It was Oscar and I'm pretty sure he wouldn't mind... But it will take a while before you can actually ask since hes out of town/country right now on buisness.
But I don't believe he was interested in making them anymore. Lots of people asked... and he didn't jump. So I'm sure if you asked him, he would probably let you produce some...
but you could design your own really easy. And heck, if you made some that went on the underside of a Happs super, Comp, Ultimate and Wico... One that moves / slides like the ones you find on ebay... You could probably sell a bunch.