Do you have a link to the storage box that you bought at walmart by any chance?Its the walmart $49 special.... 4 bolts in the corners...
Pretty simple setup, just make sure the lid opens to the toward the vehicle... Prevents it blowing off if you forget to secure it and start driving...
LanceM
perfect thank you! cant wait to do this. tired of storing my jetski covers and lifejackets inside my car when trailering my skis.