Whats required, is it just the axles that need to be swapped?

 

i beleve it is a complete bolt in, I know the 90 awds use a diffrent spline (22 tooth) tcase then the 91-94..

 

you have to change the shifter inside the car. i have a whole 90 trans torn apart in my garage if you need any parts from it.

 

since its FWD it should matter about splines really, You will need a 91+shifter/base as the brackets that hold the linkage on the tranny and the tranny levers themself are not the same. I would slap in the cables if you have them too.