Couple cracks, but nothing that would scare me, common when you see poly bushing arms like those BBK lowers.. Wheel hop murders the boxes more the anything else. Just About ever car I've owned save for a few 4cyl ones looked like that before welding and bracing them up. Current beater I replaced the lowers completely with a locally made set with adjustable mounting points
They need those cracks welded ASAP. With the current market it wouldn't be a deal breaker for me. In my experiences the uppers were worse than the lowers.