165mm crank in the Coker style

I’m trying to obtain 165mm cranks for my Coker V2 unicycle. Coker only sells 125mm and 150mm, but I like the curvature (q factor?) of them and would like to have the same style and black color on the 165mm cranks. Does anyone know where I can get such cranks? Photos of the 125mm Coker cranks are attached. These are square taper cranks.

Coker cranks.JPG

Coker cranks 2.JPG