FRUSTRATED! need help with carrier swap

Cone splines not lining up would be more than a half inch.If you have green bearings you probably need to remove the spacer

im gonna try the other way people are telling me but if that doesnt work how do i even know i have a spacer on it and how do i take off the bearings? i know you need a special tool to get out the end but how do i do this if the shafts not in? clamp it in a vice?