im planning on building a serious truck to try and win the TTC and itll have 4 wheel steer with about 56's for any street driving and 66's for off roading plus Ill be running a BBC around 700 ci and 1500+ hp. it will be supercharged or with twin turbo's so im in need of serious axles. I built a 632 BBC with about 900 hp and ended up selling it after the Co. trip as it was going to be too radical and the new engine will be actually milder built and more overall power and more low end power. bead locks are a must and a wider stance with the extra height needed for the tire sizes im runnin plus Im very hard on it and will push it to the limits. think more in the line of a monster truck with a drag racer behind the wheel rock climbing. LOL!