I got the 303, MW1 Remote which will replace one of the speedos on the dash, and this to extend the USB from the back to my drivers side cupholder:
Clarion CCAUSB USB 2.0 Extension Cable with Integrated Cover
http://amzn.com/B001GXQMXE
Hope to install it in the next couple of weeks along with the 2 pairs of Polk db651s I bought as well...