Our C7 Corvette Stingray plenum cover overlay is made our of ABS plastic and simply installs over top of your existing plenum. You just need to lift your fuel rail covers, slide this plenum cover overlay in place and snap your fuel rail covers back into place. 
This item is custom painted to order please allow 5-6 weeks for delivery. We also offer OEM GM plenum covers that we paint, this item is for an overlay, looks great and simple installation.