You "should" have an RER in your truck now. If I remember correctly, the only radio option with nav available in 2009 was the RER. As stated, an RHR is the updated version. You can also install a 2011\2012 430N RHB which also has nav(Garmin based). It uses an external uConnect module, so if your truck doesn't already have it, (the RER has an internal uConnect module), you would need to get that kit also, 2009\2010 use separate antenna for satellite and nav, 2011\2012 use what is called an SDARS antenna, does both. The good news is you can pick one up relatively cheap, 2011 ram SDARS antenna - Mopar part # 05064908AA.
