Trunk Floor Extension rubber plugs with drain holes. I thin they are the same for 67/7?.

[FOR SALE] - 4 used black trunk floor extension plastic drain plugs for 62-76 A, B, C, and E body cars

Mopar 62-76 A B C & E BLACK Quarter Panel Extension Drain Plugs - pair

Mopar BLACK Rear Quarter Qtr Panel Trunk Floor Extension Drain Plugs Pair DMT | eBay