I did a few searches just could not find just what i am looking for. I want to purchase 4.11 gears and limited slips for front and rear. I have d44 fr w/3.55 fr and ford 8.8 w/ 3.54 rr. What do I need to buy, can these be installed by general mechanic or is this a specialty. Also if I do not change gearin out is there a lsd. I can install myself. I have breazed over suppliers and I have no clue how many spline, or how to find this info. Thought I would ask.Thanks to all!!