if planning a 205 swap what trans now ?
if th350 then your fine 203 AND 205 use same tail shaft in trans .
if th400 there each specific to 203 OR 205 OR others.
so before reman on trans make sure you know what t-case you want to run .
I don't rebuild whole 203 cases . just the range box units then bolt them to a doubler kit and 205 in the back .