Car rooftop cargo box (Ann Arbor Northwest Side)

Hoping to find a hard-shell rooftop cargo box to help with moving a friend cross-country. I just discovered that the one I picked up last year from the side of the road last year leaks water into the storage compartment, and that won't work for what I'm transporting. Open to whatever brand and color, but seeking the rigid containter style and not a bag. Thanks for your considerstion!