Saw this on another FB forum......Ram mount 238u will fit straight on top of the HESD if you remove the little plastic cover. You just need to open out the holes on the Ram mount by 0.5mm (6mm drill). Ram mount is about £5-10 on ebay depending if you buy genuine or Chinese copy. I only intend to fit mine if I'm going somewhere I don't know.
I got a custom made RAM mount from Telferizer for my 07. Straight replacement for the bolt holding the cover on.