Looks like Dirt wins the prize.
I did a little looken arround on the net. Yeah, the coupe had 4lug axles with these type calipers. I also found an "E7TW" part number on the ring gear, which translates to 1987.
Now I now why all the local "experts" could not get us the correct parts. This is a fairly unusual setup.
Thanks to you all for the help!
Steven
