This is what I was saying with the =/- 2. The offset is very minor. 44 to 42 if I remember correctly. I can double-check but I'm certain I have the right numbers. I ran a salvage yard for a few years, so I have most of the wheel oddities for the Fords down.
I currently have 4 different sets of Mustang wheels that I have used on my Fusion, Explorer and Mustang. Sold the Fusion and Exploder this winter, so now, these wheels will go on the Edge. The thing you have to worry about is how wide the wheels are. Some of the S197 Mustang wheels are 8.5 or even 9 inches wide. That width will play hell with the steering stops Sticking with the 7.5 and 8-inch wides cure that problem.