i am new to the jeep world and just bought my first jeep. An 86 xj with a 2.8l. I will be swapping in a 3.1l due to a cracked block on the 2.8l. my question is i have a 2 in lift with new coils and springs that came with it are there any mods i should be conserned about with running 31's. i will be using this to tote the fam around and do some mild rocks.