The Walthers kits were All Nation in the end, although AN still produced their own line of aluminum-sided heavyweights. The cast ends suffered a bit - they were no longer a lead alloy, and slightly smaller. I do hope he can stamp out steel sides; they are often damaged - nail holes and wrinkles -
As for me, I just ran out of 40-42" wheelsets, and I bet there is a pile of them in that truckload. They were used on the Fs and the NW dummy kits.