RE: diffs for buggys which are best?
i run 10K in the center because i like the fronts to bite, 2K in the front and 5K in the back. i like to over-steer more than understeer.
i just got a OFNA "super torsen" center and have yet to try it out, i hope it helps with off-power turns.
i got the diff for $40 so if it was any more, i would stick with the reliable viscus stock one. im just hope its better on tires, because the jammin engine likes to eat them.