i've sprayed a couple trucks with a rhino like product... interiors, bumpers, rockers, wheels wells etc... it works but its nots bullet proof. if your going to do it make sure its with a product you can touch up yourself.. and make sure you scuff every sqaure millimeter cause all it take is one edge to get moisture under it and than over time with freezing a thawing it causes problems... dont not spray to bare metal. i did a yellow ram with wrx blue bedliner up to the body line it looked deadly... you best bet is too pull the bed and slide it back a foot AFTER you tape your lines.. other wise you end up spraying that stupid vent on the back of cabs and you get a crappy wrap around the edges.... If you want to know more just ask... i sprayed bedliner proffesionally for a year.... basically any monkey can do it but it takes patience to do it right