Here is a thread that discusses it, and someone went ahead and built one: Coker Wheel set $125 shipped
The parts as listed should just fit together with the exception of the shim for the bearing holders on the Nightrider frame. I made a shim from a piece of sheet metal that was one milimeter thick. I just cut two strips, and crudely bent them into a circle. Once installed the bearings/holders formed the strips into perfect shims.
I think the Titan frame uses 40mm bearings, and so wouldn’t require a shim.