True about the ball diff up front. Didn't think about that. But the oneway can tweak or warp where it's not supported by the screws. With a ball diff... the whole gear will move. So it won't warp. I noticed this when I stripped a couple oneway gears when I first got the Evo3 last year. The stripped part was always on the part of the gear not supported by a screw. Once I went to a diff.. all problems went away.

Anyways, I don't have the car anymore. But I'd still like to see Evo4 with the gear mount to the back of the gear and not the front. It would help me sleep at night... lol..