In this case I would locate the cause of it, either strut mount or coil springs or even struts, and I would change both sides. Otherwise I will risk to have again one side lower than the other, I mean if you put for example a new mount on the damaged side and keep the other side as is, the used one would look lower, on the other side.
I dunno this is what I do, even paying big $ for it...
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Danny
1994 Silver SVX in hybernation, awaiting for the
monsterous awakening (Lebanon)
1967 Mercedes-Benz 250SL Euro Specs, Hard/Softtop, White/Red. Under Complete Restoration
2013 Mercedes-Benz SL350 Euro Specs, White/Red. Mint... Another step into SL Collection.