Don't use your old rusty mounting bolts when installing aftermarket or stock front lower control arms (if you managed to get the nuts off without breaking the bolts!).
Our front a-arm mounting hardware kit includes:
(4) 12mm Grade 10.9 bolts (silver zinc plated)
(4) 12mm steel lock nuts (silver zinc plated)
(4) 12mm flat washers (silver zinc plated)