When converting any 4wd car or truck into a 2wd you much remove all the extra rotating mass from the front wheels or you will greatly reduce the rear traction of the car or truck. Its like pushing a heavy wagon, your feet are going to slide all over the place in comparison to pushing a light shopping cart. I would highly recommend you remove the front differentials/ drive gears, driveshafts, and bearings ect. which add up to allot of extra weight in the front of the car. You will definitely want to re-position the battery into the rear of the truck.