V6 brakes, at a minimum, if you want to stop on a 57 degree slope. With the 4-cyl brakes, my water tank trailer (with 200 gallons of water) outmatched my Raider once, causing me to swear rolling through a 4-way stop intersection. Wasn't my turn, everyone stayed put with my horns blaring and lights on hi beams. Not even much compression braking under that load!