my first question is why would i have a scraping noise coming from the rear end of the truck almost as if the brake pads were metal on metal. but they arent.
also sometimes my back brakes get stuck. like if im stopped at a red light, when i go to take off the engine will rev but the truck wont go for a second as if the brakes were stuck. could the calipers possibly be bad. also would it be a good idea to flush all of the brake fluid since its probably the original fluid.
my other question is what are the easiest modifications to do to the truck. i know of a cold air intake and dual exhaust i also know about getting a tuner. but what else is there that can be done.