Originally Posted by Dan216
Hmm.. It's the lift that has to do with the angle of the drive shaft right?
The drive shaft is between the axle and transfer case. The transfer case is attached to the frame via the trans crossmember/skid plate. The relationship between the frame and axles are defined by the springs between them. The only way to change the vertical orientation of the t-case relative to the axle is with longer/stiffer springs or a higher crossmember. The diameter of the tire doesn't have any effect on the orientation between the t-case and axle. The entire Jeep raises up or lowers down by the change in radius between the old and new tires.
Break things down like that and it doesn't matter if you're 'mechanically inclinded' or not. It'll be simple regardless.