Well me either I'm not to savvy on working on cars. The n 4 00 is that a diffrent transfercase iv had a fj 80 for the longest time and i loved it . I'm planning on getting another to do this project . I do have a budget to work with. What is the split case do. does it split the gears from 4 to 2 by in the transfer case from the fj80 landcrusier