Yeah, those old Fords just keep on keeping on.
And, yo wifey definitely gets style points, Bushhogging with a vintage tractor. A woman who can drive a tractor is definitely worth keeping... grin
I think you measure from outside edge to outside edge, then subract one caliber. That takes you center to center. That's a lot more precise than tring to find the middle of a big .50 cal. hole... wink
Donkey ate your homework, hey...
DF