I have a 120y coupe and the problem is, the rear axle is covered full of gunk
and my question is how hard would it be to replace the whole rear axle from a later model
can i get a list of later model axles that bolt straight in?

or would it be easier to replace the diff centre?
i also would like to keep the h145 prop shafte flange
My coupe has the H145 rear axle i think