It's very hard to eyeball suspension components for damage, as it only takes a slight bend to throw things off; this is especially true of curved components, like the control arms. It's best just to replace everything, and if it were me I'd do both sides unless you've already got new stuff in there, as it's good practice to replace components on both sides of the axle at the same time.
On the positive side, the suspension is ridiculously easy to R&R, especially if you have an impact. You don't even need a ball joint separator. You could bang out both sides in an afternoon if you have basic mechanical skills, decent tools, and proper instructions.
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Life's tough. It's tougher when you're stupid. -John Wayne
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