Sig, if the rear wheel camber is aligned to specs WITH alignment shims, that means your car has NOT had the dreaded 'rear-subframe-collapse' so prevalent among hard driven or big-tire Panteras. Congratulations! This is rather rare; most cars not only need the shims removed, they add a longer upper a-arm to return the rear wheel camber alignment to stock. THat's why seeing factory shims is unusual.
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