driving me batty!!

Ok here's the deal: 96 GT Coupe...there is a rattle coming from the left rear wheel area over bumps.

The car has new (1 year) shocks, new (6 months) steeda sway bar, and new (3 months) brakes. The only thing I can see is that the left rear lower spring seat looks like it is crooked when compared with the right side.

It almost sounds like something is loose and rattling. Any input on this would be most appreciated.