[David_Hayward (RIP)]

I have conjected from evidence, but never proven, that McKinnons license-built the Timken-Detroit design. If taht is so, then they would have added the requisite strengthening ribs. We know from casting marks that GM produced the castings so this makse sense to me.

I have also conjected that experience learned from the CMPs was sent across to Pontiac, MI, who were responsible for US military GM multi-drive trucks i.e. GMC then Chevrolet. Chevrolet's Axle Plant then prodiced components along with those bought in from Clark, Wisconsin and Timken. I note that some transfer cases were "GMC". This must have been from the ex-Northway plant, GM Truck Plant No. 7 in Detroit that produced axles for Chevrolet.