Never put one on a Tundra but just pickedmine up today so Ill be doing that tomorrow

On my 2003 F-150 they sell a hook with washers and nuts to secure it with out drilling or self tapping to the truck. I got mine at a Leer Truck parts dealer. The hook goes under the bed rail and the straight part goes up through the shallow side compartments in the tool box and thats about it just tighten them down. ( 2 per side )