Never had a need for the big EM backbox metal covers, now I need 2 - one each for '76 4-player GTB and BLY. Wondering what's easiest, least expensive, best: do I look & wait until a used one becomes available, or have them fabricated? I have no idea of $$ used, new, hand made, $shipping, etc. Didn't see anything on PS or eBay. Any advice would be appreciated. Plywood is not an option.