I love the ARE-type "walk-in" door on the back of a truck cap, but, of course, my old freebie cap doesn't have that feature. I'm wondering if any of you have seen a DIY version of these doors because I'm thinking of trying to make one. I would remove the tailgate and just build a new back that replaced the tailgate and the cap window and incorporate a vertical door in that. I have lots of wood-working tools, but no experience with this type of build. That lack of knowledge has not kept me from making things, it's a great excuse to learn new skills, but I would like to see a picture or two (or 20) of this type of conversion.