Easy to install, keep your iPod or iPhone handy while your jamming on some tunes down some twisties. Base will work with any ProClip Holder. The two holders I have are for either a current gen iPod or a 4S iPhone. ProClip makes them a 'with' or 'without' a case option. Both of these are the 'with' NOTE-ProClip also designates a model for R56's with the 2nd upper glove box/CD player holder. This is for those R56's with Base new is $30, Selling for $20 Holders are $35 new each, Selling your choice $25 Shipping included to lower 48 Paypal or Personal Check Please PM if interested and/or questions