All 90, 120 and 125Hp no Mercury style LU will fit your engine.
The gear ration can be a bit different.
There were three different ratio, 1.73:1, 1.93:1 and 2:1.
I suppose your LU is a two piece drive shaft style.
The Mercury style LU was from 1994 and up I believe.
BTW There are a post not long...