I had the J & M 2003 on my ST1100; I'll mount it to the ST1300 as soon as I get time (you have to remove a lot of plastic...) It worked well and also provided intercom, weather radio, and a plug-in for an MP3 or similar device. To mount your antenna, check our Motorcycle Larry's antenna mount. Nicely made, and you have options for use with or without the topbox.