Chris Unick

Found a one owner gem here in mid TN and now am looking to personalize it with storage and stuff so I am wondering if there is a place where I can find acceptable dimensions for things like tonneaus, tool boxes, grille guards/pushbars/lightbars, etc without just finding a new product and seeing if it will fit as there is plenty of used stuff out there (and junk yards) with good used equipment lying around. I know I need to spend more time on here and search around but basically I am looking for measurements / schematics where people have dimensions so I can ask sellers to measure certain things before I commit to buying or stopping by. I may start by looking at new stuff and seeing their dimensions but again, if anyone has saved or pinned please post. Much appreciated for your time and it's nice to be back in the truck world.