i can get a set of rockwells dirt cheap . so if i was to go with rockwells what are the pros and cons ? how hard and exspensive would it be to go with disk brakes . also are they posi limited slip or are they lockers ? if not can you get lockers and how much are they ? if you have any information you think i need to know just let me know . one other thing should i go with hydrolic steering or can i use standerd power steering ?