Need a pair for the driver and passenger door, not sure if they are repo'ed but did not see them in my legendary catalog
Contact ToddGS GS here on the board, diecast muscle cars. He should have them in stock. Roughly $90 a pair.
I do have them in stock for the 1970 Cars as well as the shorter 1971/72 Models Here's the 1970 Versions > https://www.stage1restoration.com/product/backing-plates-1970/ $79 plus actual shipping