Re: i need a new lower unit
Any V4 lower unit from 1979 on will work. Just use your shfit rod if you run across a looper unit. Easy way to ID a V4 - it'll have a 13 spline propshaft and coarse threads for the prop nut.
A V6 case will fit too but you'll end up with a really strange gear ratio for a crossflow V4 and need another prop (splines are different).
A V8 case will fit but you'll really have an odd ratio........