I have found that some of the 16" wheels still don't fit due to the stamping issue. The Wheeler's wheels DO fit, that is certain. They are a 7 round hole wheel. The Soft 8s (Crager, Unique, Allied, etc) DO fit. They are an 8 round hole wheel.
Backspacing on all of these is 4.5", and I *think* 4" on the Type B Wheeler's.
I haven't found a D hole 16" wheel that anyone has gotten to fit, someone PLEASE correct me on this (that what I want, preferably in a 4" or less backspacing )