65 Mustang standard steering wheel

Anybody know if there were different thicknesses of ring in the original (standard) steering wheel for the '65 Mustangs?

I have one original steering wheel (damaged) and one replica (new) that measures the same 2 1/2" around of the ring, also have another original (with wear signs but very good) that measures 2 5/8". I can't explain to myself why the difference.

Much apreciate your comments, thanks in advance.  

Is this possibly due to different production places ie dearborn, or san Jose is it possible that they had slightly different presses that produced the parts and pieces for these steering wheels.  I'm just thinking out loud.  

Thanks Luke, it's a good clue. Let us see if any other can confirm it, or contribute another idea.  

could also be a difference between and early and late production as well, i will check and see what mine is as mine is built Aug 17 1964,first day of the 1965 model year, in dearborne.  

Just measured my Sept 64 Dearborn coupe and it measures out to be 2 1/2 my wheel is completely stock. Not sure of this helps at all  but hopefully it does  

Hi all, the 2 1/2 (crackle) belongs to Jul 65 Dearborn produced Mustang, the other 2 5/8 was pulled out from a 65 Mustang to replace it for one with wood ring, since very many years ago. So I can't know the specific date nor plant.
I never noticed this difference till now when I try to replace the damaged steering wheel with the one stored for many years, also all reproductions that I know measures 2 1/2.