I have that exact truck. I bought it used and have never done an upgrade on the breaks but I'm pretty sure mine has a dual piston caliper already. I thought it was factory that way but with you saying that now I wonder if it was upgraded before I got it? The only thing I can think of is make sure your wheels are large enought that a larger rotor and caliper will fit. My truck has 17" wheels and I know there's not much room between the caliper and the wheel. I know this because I almost lost a caliper bolt one time and just the slack from that made the caliper rub the wheel.
Sent from my SM-G892A using Crappie.com Fishing mobile app