Heres the classic problem: regear and put a traction device in a 10 bolt or get a dana 60. The type of wheeling I do most of, and am planning on, is sand, (abusive tractor pull type stuff), and trails with every kind of dirt and lots and lots of loose rock. I'm most worried about the horsepower hill climbs with the soft dirt lots of rocks. Some of the rocks are stationary as well. It's held up so far to 33's and a 305, but will it be able to hold up to 35/16 R16 boggers ( or else 38 15 R16 SSR's when they come out) being spun by >= 400 horsepower (383 or 454 on the way)? I'm leaning toward the 60, but naturally I'd like to keep what I have because it's cheaper and lighter than a 60. Another reason I'm leaning toward the 60 is the larger brakes. How do the 10 bolt brakes compare to the 60's? I am planning on an automatic type of traction aid, either a trutrac or a powr lock. I'm shying away from a detroit because I need to turn sharply, and I want it automatic, no ARB.