I have my new Samurai conversion sitting on the bench. I will be doing an engine swap next week, and install the new front housing then. After testing it I'll post the results on the DYI section. If you are able to create things, this is a natural build.
To use a Samurai third the short side of the diff input sleeve needs to be machined to allow the Tracker long CV (larger size) to go all the way into the diff. Compare the lid side of both Tracker and Samurai input sleeves and you will see what I am referring to. I believe HAWK has machined Samurai thirds for use in Trackers, if you don't have the machining capacity.