There is an existing bolt that you mount the bracket to. You have to pull up the sill, then the side cover under the dash, pull the carpet back and the bolt is right there.
I found though that I had to pull out and cut into the stock styrofoam -- I couldn't get it to fit in place nor could I get the carpet back in place until I trimmed the styrofoam back. It looks good, but more importantly it really does make the drive more comfortable.
2013 MCA Convertible, automatic - Revelare Designs cowl hood, Hellion single turbo.