Bought a TrailFX toolbox and Extang Express tonneau. The tonneau had to be measured/custom cut to fit with the tool box.
First ordered a low profile box, came to the store only to discover the latches would be below the level of the tonneau. Huge, bulky item, but no problem with not taking it and getting regular profile box.
Now working on getting an Undercover, hard tonneau and some rims...
Nice guys and great service.