Hello this Is My First Post I have A 2008 GL 450 That I Just Got 3 Weeks Ago And I Love The Car So Far But I Had An 2005 Chrysler Pacifica Prior To This And I Upgraded The Radio To A Pioneer Double Din Unit With navigation, DVD, Bluetooth,Etc...Alot Of Cool Features...and the main thing it was touch screen...and that is the only problem i have with the GL Command unit that it is not touch screen for the year of my truck...so i would like to know have anyone installed a aftermarket radio or would they recommend doing it any help is good thanks....