Not just in this forum but across the internet I see a complete lack of info regarding upgrading the audio system in the 4th gen Ford Explorer (2006-2010). There's no pre-fabs, articles, competition wins, etc. The Sport Trac has some traction but the normal Explorer just has no info. A forum search for "Ford Explorer" only comes up with 7 pages of results and of those very few are Explorer specific, regardless of the model year. For such a popular car this seems odd, is there a particular reason for this that I'm not seeing?