I have attached a pic to try and show what I mean. Not a massive problem as replacement mounting plates should be easily fabricated - it is the strut bar itself which is worth the money. I personally don't like the JCW bar as it prevents you from accessing the camber plates (which I have fitted to my car), so even with the extra work, I'm gald to have scored the Challenge strut bar, and at a good price.
I wanted one for the same reason, I didn't notice the extra stud when I was up close with the Challange car at the
JCW launch - should have put my beer down and taken some pictures!
Still interested if the cost of the mounting plates dosen't get too high.
Rgds
John