If I remember right, they moved the upper control mounts exactly 1" back on the Gen II. I do not recall what caster numbers I ended up with, but it was a considerable improvement over the Gen I. I'd say the average caster on the Gen 1 ends up somewhere around 1.8 degrees. I'm thinking that the Gen II we ended up with something closer to 4.5....but don't recall exactly. After almost 20 GTM's on the alignment rack, they all start to run together in my head.......