Out of the interest of the Z owners here, I am copying some info that is probably good to know. Fitment came out great. Original INGS kit goes for 2-3k$
To prove the theory of "you get what you pay for" is not always right. We bought a replica Ing+1 from Ebay for $197 and install on a Red ZR. Fitment is 97% fit. The 3% different is from the rear bumper (minor adjustment for the trunk release hatch.
We bought it here:
Paid the seller $100 for local pickup. This $100 is the offset for the kit since he try to avoid the ebay fee. We have no problem with this. Total for this kit is $297