I have learned a lot from all of you truck bed camper builders and that gave me confidence to do my own project. My build is on a 2016 Ford f-150 XL with a leer 122 cap. Ones I bought the cap brand new I watched a ton of videos here and derived my basic ideas from you who shared videos on YouTube. Then I customized my project to what I thought was important for me. The LEER 122 was 3200 US dollars with two extras. I ordered the cap with a removable front window and carpeting.
Ask any questions you may have. I'll be happy to answer or be of help for your project.
Good luck 🤞 🙂