Very nice on it being a Z51! Z06 shocks and swaybars are a direct bolt-on as well, and pretty dang cheap from RockAuto. The navi, HUD, and upgraded armrest are nice little bonuses too. My dad got the 2013 navi update disc for his 2006 and it made a nice improvement vs. the original maps. Looks like V.2016 is out for the C6 now:
http://gmnavdisc.navigation.com/prod...en_US/GMNA/USD