No offense, but where have you been? I've been parading around my rolling used parts wagon on the trails for almost two years now! How's this one, I converted the rear axle to accept a Detroit locker too! No ARB for me!
I admit it, I was bored and had more $$$ laying around than I knew what to do with! No seriously it was the best decision at the time, made for a fun project and is always a topic of conversation on trail runs. Visit my website for more details than I can repeat here.
Back to topic. For the skinny on a post-OBDII auto- to manual- swap, read this thread from system-f on TNT, he just did this swap on his R50 Pathfinder:
http://texasnissantrucks.com/phpBB2/viewtopic.php?t=3837