1. bt has billet valve covers i believe although maybe not for the ram. I used wire loom and the bt underhood kit for mine. (see pics below) I also fabbed some half covers to cover up the head and wiring using the charger ones from 3gcustomz and modifying them slightly. but i dont have the engine cover due to a vararam intake setup
2. I doubt with a one inch u would see any loss in tow capacity but i'm sure someone will be 100% on that soon.
3. U can't powder coat the chrome clads. u could get some brake dust shields to keep brake dust off of them.