I just bought a livorsi GPS speedo with an antenna because I didn't think I could buy one to match my other gauges. Well murphys law came in to effect, as soon as I got it in the mail. I found the exact one that matches my boat. I am trying to get 400 for the setup. I can't figure out how to post pics but here is the craigslist posting.

http://nh.craigslist.org/boa/2141635107.html

What size is it?

it is 4 5/8 with mega rim

$350 plus the ride.