Question on aftermarket style 87 wheels

[tims210]

I have been looking at a few X's with aftermarket replica style 87 wheels that came on the 4.6is. In one instance I noticed that the rear wheels didn't seem to have the concaved spoke deep look that the factory wheels have. The spokes were more flat like the fronts. The sizing of the tires was the same as the factory 4.6is setup. It was on a 2006 4.4i with sport package. Is there more than one version of the "knock off" style 87 that may not have the same offset as the factory wheel?

Thank you.