You'll hear a lot of people dissuading you from plastidip, myself included, if possible you should try to get them powdercoated or painted. I dipped the rims on a previous car of mine going through the whole process to do it right etc. and it just doesn't last... looks alright at first but fades quickly, is tough to clean, and a bish to take off. Wouldn't recommend for prolonged use as it will begin peeling as well... my .02 your truck below
The econobox before the Ram
Gives you an idea of the texture/finish, this also has the plastidip "shine"