Timbo

Here's a metric conversion for you: I rounded off the converions to integral numbers.

You can use the Garmin cradle with your existing RAM mount with an adapter: http://www.gpscity.com/item-ram-mount-garm.../ramholga11.htm It allows you to attach a RAM ball diamond plate to the cradle part of the Garmin mount. Then you can use the RAM arm and suction cup you already have.