Hi,
Sorry for appearing to ignore you, I don't check in this forum too often. As to the dish depth it is quite difficult to measure. What I've done is take a measurement as best I can from the bottom of the wheel i.e. from where the wheel would lay on a surface if it didn't have the plastic piece on the bottom of the wheel centre attached (God that's a dogs dinner of an explanation) from there to the top edge of the steering wheel rim appears to be 2.5 inches.
Hope this confirms your thoughts.
Let me know if of interest.