I am installing the Gator fx5 aluminum folding cover on my new Ram. Like the BakFlip it props ugainst the rear window for full use of the bed. I do not have a tool box but I bet it would fit.
Doug & Cindy
2014 Cedar Creek 36ckts, Disc Brakes, EMS, Trav'lr
2016 Ram 3500 CCLB DRW CTD Aisin 4x4, 3.73, RASS, Andersen Ultimate Aluminum II