Putting weight over the rear axle will certainly help. The old standby, bags of sand will do nicely. If your truck has it, turn the traction control off before you drive in snow or ice, since you will get alot of wheelspin and the TC will just freak out and cut the fuel or spark. If were buying another truck it would defiantely be 4WD. The difference in fuel mileage isn’t much, and they hold their value better. With that said I made it through the blizzard of 96 in a 1974 F-100 2WD with a 390 4bbl, 4.11 gears, and 3 on the tree. There were some white knuckle moments.