The measurements and accessories I planned worked out welp. So far, everything has held securely in my car, and I drive fairly aggressively (no judgement, haha). This is my second set up. The first two purchased were for my raptor. I also bought a set for my brother-in-law for Christmas one year.
The only productive feedback I might offer is that your website is not completely clear as to what accessories you need for what you want to accomplish. Maybe I am just an idiot, but I think a set up package/kit by application or an install wizard or a series of install videos on each product page might help. It took me a bit with each purchase to go through the site and figure out exactly what I needed. Hope that helps.
Appreciate what you guys do! Great products!