Good point on the power going thru the drivetrain will change the pinion angle.
N8 if your kit comes with a T-case drop down use it. That helps get the geometry close enough so you don't need to worry about it.
Yeah, the kit does come with it. I have to get under my rig and see what it has. I haven't really had enough downtime to check it out. Looks like I'll be home this week or next week so I have to take the skid plate off and do some research. I feel like a tool not knowing whats under my rig. ha.