I think maybe an inch or so, easy to find out, unbolt the t-case mount and jack up the back end and see how far it goes up before hitting.

For the unequal F/R lift, see below for some considerations:
- http://www.4crawler.com/4x4/ForSale/MotorMount.shtml#MM_FAQ2
- http://www.4crawler.com/4x4/ForSale/MotorMount.shtml#MM_FAQ3