You have to match up yoke, gimbal bearing, and engine coupler ... so they are not necessarily directly interchangeable. The hinge pin is in the transom assembly. You can also modify a standard transom with the HP hinge pins ... the parts you will need depends on the vintage of the transom assembly.

Pretty sure … so if you really want to know, better repost in the drives forum. I am pointing this out just so you realize that just because you have HP hinge pins, doesn’t necessarily mean that you have an XR drive.

I installed an HP transom on my Black Hawk. It has been a while, but I think that I upgraded the yoke and engine coupler.

Andy