I recently purchased a 2000 GMC Sierra 4X4 . It has a stepside bed and a regular cab. Im wondering if anyone knows where i can purchase a tool box to fit my bed. (48 3/4"). and i cannot find a bedliner either. Im also wondering with the stock torsion keys what would be the reccomended adjustment for lift. And what tires size should i go with. Also are aftermarket torsion keys worth it? Thank you....