[01pewterz28]

2012-2013 ZL1 rear bumper will fit no problem, if you or they are looking at a 2014 ZL1 bumper you would need a new deck lid, spoiler, wiring harness, absorber, side markers, and tail lights).

If you are wanting the 12-13 you will need the rear bumper, lower ZL1 diffuser, exhaust shields, ect.. If I recall the cost of mine was $450 the ZL1 diffuser, brackets, heat shields, and mounting hardware.

You can use your stock bumper absorber it will need to be trimmed so just have them order one from the ZL1.