I used 4 squares of cheapo DS tape for the base and I used the DS tape that came with my GReddy Profec EBC to stick the SAFC onto the stand. I used to use the cheapo tape for that but it melts under the sun very easily.
On that note, with it mounted on the dash like that, the RSM will be exposed to lots of sunlight so make sure you cover it up when you are parking in exposed areas.