Don't use your old rusty mounting bolts when installing aftermarket rear lower control arms (if you managed to get the nuts off without breaking the bolts!).

Our rear lower control arm mounting hardware kit includes:

(4) 12mm Grade 10.9 bolts (silver zinc plated)
(4) 12mm flanged head steel lock nuts (silver zinc plated)
(4) 12mm flat washers (silver zinc plated)

Specify vehicle year: 1982-1997 F-Body use Part # 981, 1998-2002 F-Body use Part # 980