I am getting ready to do the gator guard II bed liner. Before one lays it down, you have to sand everything, so i misted the tub with some cheapo black spray paint. Also I threw some pictures of the unmasked chassis.
Get ready to sand!
Sanding should take less than and hour with an 80 grit hand sander:
Rear-End
Cage and crashbar mounts:
Front End
My garage is a mess I can barely sleep if I think about it.