Seems to me you'd need a good amount of funding first of all; you could crowdsource it or pitch to a producer here, either way you'd need serious money. After that I'm thinking your best bet would be to find a Japanese pornographic animation company (if there are domestic companies like that great but I'm not aware of any), specifically one that can do the style properly, and then probably digital distribute from the US.
I hope it happens, partly because I like that stuff, partly because it might be the most offensive porn movie ever made for that much money, and it could cause a shitstorm.