1990 - 1995 Corvette ZR-1: Wheel Well: Locating the panel that fits in the rear portion of the right front wheel well
You won't find that GM discontinued part (discontinued in 1999) unless it's from someone parting-out or willing to sell a part of an assembly.
Try a non-ZR1 panel and retrofit it by drilling holes to attach a ZR1's control modules/relays located on the backside of the rear of the panel. It has
been done. Perhaps that's the reason 10276500 was discontinued; if so, it's a "secret."
The part number for that alternate (non-ZR1) panel is 10276498; however, verify part number when ordering. It is not a high-cost item.