Outer Limits 4x4 Board

I'm replacing my diffs and in the process will be installing free wheeling hubs.

As I'm looking for 26 spline Aisin hubs are all Sierra/Vitara manual hubs 26 spline?

If not which year Sierra/Vit should I be looking for?

Ben,

Vitara or coily Sierra should do the trick. Leaf sprung Sierra hubs are slightly different although they can be made to work if need be but it's not really worth the hassle.