Replace the lower arm. Install with new bushings. Install with new replacement hardware. Welding with unknown, unseen damage ; self defeating results.
Word of caution, you now have known damage. Murphy's law states " known worn or damaged parts will always fail, far from home, when you forgot your wallet, and dropped your phone broke screen, to look under hood".
Word of caution, you now have known damage. Murphy's law states " known worn or damaged parts will always fail, far from home, when you forgot your wallet, and dropped your phone broke screen, to look under hood".