No problem bud!
There is a slight difference and it is not noticable to the eye. I believe that the OEM Cobra R Wheels have an advirtised offset of + 25 and the replica is +24. It does not seem like much, but it is enough to make a difference. The other thing is this: the factory wheels are cataloged as fitting Mustangs and the replica wheels are described by the manufactures as fitting Explorers. I can not explain it any better, but it works. I am glad, because I do not like to recommend using spacers. By the way, the quality is good and they look exactly the same except for the the center cap.
Check out the pictures that Rick posted for me. Let me know if you have any questions.
John V @ EE