Can't comment on the part you are referencing but D&R is a good vendor. They are one of the major Camaro vendors. I have purchased from them a few times and since they are in the Chicago area, I have gone to their location..

When I cannot find parts from our Pontiac vendors, I will check their catalog. They often have the correct part if that part is also used by Camaro. They have a much better fastener selection than any of our Pontiac vendors.