Feb 2014: The kit came with mounting brackets for the roadster roof.  They are not OEM, but decided to go easy on this one.  The "S" brackets were glassed into the roof.  The guide studs were easily inserted into the rear holes of the roof.  The polished aluminum guide washers had to be ground down pretty significantly to fit the receiving holes in the body.  Surprisingly, everything fit pretty nicely and the clamps to hold down the roof worked as well with just a little bit of sanding.

 Roof1 Roof2