Just spent the last few hours refreshing through this thread nice bud well done bud. Also bud how different/hard would it be too do what you did with the skyline box to a 350z 6speed box (rwd) the ratio's are better than T5 and the boxes are cheaper and seem to be alot stronger than T5 the 350z takes alot more torque than T5?
If you need another 3.9 front diff im pretty sure I have one if you need a spare will check tomorrow and take pics.