Not to be funny, but what do the instructions say?
![Confused](http://www.986forum.com/forums/images/smilies/confused.gif)
From the picture, it looks like the hole spacing on the bracket all the way to the left matches the existing studs spacing on the car - I presume there is an issue with the other side's fitment if you use those?
If this detail is not covered in the instructions, why not give the mfgr a call? If things aren't lining up, there could be something wrong with the part itself. The whole point of what you've bought is safety - I'd trust the folks that designed and made it to provide the best info on how it should be installed and to consult/explain if you are having problems.
Good luck...