I just looked at Adventure Accessories (
http://www.h2parts.com) and found the following:
Cross Bows (GM Part# 12498492) $341.10/package
Underbody protection (GM Part# 12498474) $315
Rocker protection (GM Part# 12498471) $513
Total $1,169.10
Your installed price of about $1,100 is way high for direct bolt-on parts.
Anyone see a better price anywhere?