After too many hours of trying to find a decent thread on what actually works for a Diablo wiper, I came to the conclusion that I just have to roll up my sleeves, and make something that is well, basically a Diablo wiper arm.
I'm sure that you guys realize that there are basically NO good photos of real Diablo arms, so you know that this was a beach to design.
Oh yeah, for all you guys calling these things "dual wiper arms", I kinda cringe when I see that. They are known as Pantograph Arms.
It's all stainless steel, including the hand-whittled base. The transmission-to-arm pin (not shown) is from a late-model Malibu. The wiper motor (not shown) is from an Audi A8.