Good luck man. It's super hard to find a cheap XM reciever. As for Navi systems I know a few people on Legacygt.com that are selling them for about $450.Looking for a XM/SIRIUS satelite radio adapter to my Outback 2008 lmtd
Also, I might be interested in the nav system.
ps: email dirwetly to pf65 at comcasy dot net, as I am not sure if I receive the PM's to this post