To sum it up, in a half ton there isn't a hell of a lot that you can do, period. You don't need to add anything to your rear-end or springs. Simply put, half tons have lousy traction no matter what you do, because of lack of weight over the rear axle. On my 56 pickup that I built in 1975, I put a 390 Thunderbird engine in it, with a c6 automatic and 12" wide tires.----it was as useless as tits on a chicken. I ended up cutting a 40" length of railroad track and welding it between the framerails, just back of the rearend.----still shitty traction, but I could do the most amazing "smoke-show" that you ever dreamed of, whenever I wanted.