Pete, Thanks for the complement! The cap was $2575 plus $315 for the Yakima rail system and $100. for the install.....8 years ago it was $1750.....go figure, The wait was 6 weeks from the time of order to the time of install. They use a form of "C" clamps in 4 locations inside the cap to secure to the bedsides sandwiching a rubber "O" type seal between the cap and the truck (no leaks!). No holes are drilled. They also wire in the third brake light (standard). Mine also came with a bottle of touch-up paint. Total cost with tax was $3229.20