Screwed up this AM and damaged the passenger side carbon fibre rocker panel valance. No damage to metal rocker pane so replacement shoud be easyl. Trying to find replacement part. Dealer is telling me it's "after market" though I provided part numbers I got from our site: 84795019 and 84775020. Most online "Factory GM Parts" sites won't accept my VIN and the part they show looks nothing like the one I damages. Dealer suggested that the rocker covers come in pairs only. Anyone have any experience here? I'm a newbie so be kind ;-).