I've replaced the rear firewall area of my car with the panel below from Restoration Design. The panel from RD has a large cutout for what I'm guessing is an additional plate that holds the firewall bushing for the shiftrod. Does anyone sell the plate that has the pressed cutout for the bushing? Does this need to be cut from a donor?

the little plate retains the the front edge of shift rod boot. smaller round for sideshift and a much larger oval one for tail shifters.