There isn't anything on the crutchfiled site about changers other than the one that plays through your radio (but is still a direct wire connection). As for the bass link here is a link to one on ebay.
http://cgi.ebay.com/ws/eBayISAPI.dll...category=32822
Your best bet is to head into a store like circuit city and ask them. They are pretty up to date and have all the info on who makes what for what automaker. I know panasonic used to make the stereos for Toyota, now who knows as JBL makes speakers and amps not anything else. They should also carry the Bass link. Go check it out, I'm sure you won't be dissappointed with the bass link. A coupble guys have it on here, and I have a buddy with one and he loves it.
Good luck!