Is it feasible or should I just forget about it? If it is possible, and not hard, how.

 

It's possible that you forgot to search.

Using 28* spline as the keywords works damn well.

 

easy to do, all you need are axles and a carreir to match

 

like ede said, it's very easy... the 28-spline axles will basically just slip in right where you took your 26-spline axles out, you just gotta swap the old carrier for the newer 28-spline carriers though. Just be sure to get the axles and carrier out of the same parts car and your good to go.