[markantioch]

That's a poor man's mod done to that shock tower. You can shim it on the top, but it's still going to be off underneath where it rides the plate. You'll have to shim top, and bottom, or re-mod the plate to meet the shock angle.
I recall when I purchased mine, they ask if I was going with the stock Stang II parts, or if I was going with the aftermarket coil overs. I didn't ask why, just told the sales guy I was going with the stock components.
Post pics how you end up resolving that issue.