Sorry this is late, but here are some photos of my OP Trucks. There are one of the first production releases of the OP trucks. Never versions have the same geometry but have a more polished finish. Here's a side shot of the trucks on my ThreeSix double drop, with Orangatang purple Kegels (80mm/83a).
And, here's a closer shot of the trucks themselves. You ca see the hanger resting in the baseplate and this shot quite nicely shot the 17degree angle of the baseplate. The kingpin doesn't fix the hanger as with TKP or RKP trucks ... rather there is a elongated slot in the hanger that allows the whole hanger to roll along the cam. What's not immediately obvious is the size of the baseplate ...
Which you can better see from an overhead shot. The baseplate (Note 1.) is substantially bigger than calibers or paris trucks. When I initially tried to fit them to the ThreeSix double drop, I couldn't get it to fix because the baseplate was bumping the deck (you can see this better in the photo above). I had to create some space with a 1/4" riser (Note 2) and then everything was good. You can also clearly see the small clearance between the wheel and the baseplate.
There was also some discussion about the lean of the OP trucks. Here's a shot leaning to the left.
Looking from above you can see there's very little in the way of clearance. This shot was taken almost directly above the hanger looking down.
And, you can get a better idea from this shot from the other direction.