I know next to nothing about radios Im afraid, but for parts - this link should be all you need to find a part number: http://www.toyhaus.com/ff4wdbg.html

Once you know the part number, try running a search for it on Google. Thats what most of us here do until we have found a good supplier or two that we stick with. I think you can also order direct from the link above by clicking on the relevant number, but I havent used Toyhaus personally, so Im not too sure.

Hope that helps somewhat though. Good luck.

Edit - I just realised I posted a link for the 4wd version, if your is the 2wd, then this is the link you want - http://www.toyhaus.com/ff2wdbg.html