On my 76 450 SEl there are the 4 holes in the rocker panels to receive the factory supplied jack unit. These 4 jack hole brackets are broken. Is this something that happens often? Is there a fix?

Thanks

__________________
1976 Mercedes 450 SEL (170K Miles)
1999 Nissan Altima GXE (45,000 km)
1986 Ford Bronco II 4x4