I just bought my first truck its a 98 gmc 2500 5.7l. Yes I know that gas and insurance is going to be super high for a 16 year old but when I bought the truck it was missing a tail gate and the rear bumper is all rusted up. My older brother has a bumper and tailgate for $300 but I was also looking at the moto-gate on motosport for $60. Would this be the smarter option? It might also help with gas mileage right? And what other mods would help with mpg? I was going to put a tuner chip and cold air intake kit on it. Thanks for the help as I will need the truck to haul my bike and sled!