What does the 6 bolt or 5 bolt output flanges have to do with a LSD conversion? What does the gear ratio have to do with it too? If I was dropping one of these on an Auto 4 lug 240 without ABS, are there any extra costs or supplies or flanges I might need? Can I use my original Axels? Does anybody have part numbers, my dealership has fools working there so I like to know the part#.