it dependson the shop, usually remove and reinstall of tranny is $300-400 at a shop that only does transmissions. Bench time to install the LSD is about an hour of time. So your looking at about 100-150. Its not as complicated as everybody thinks, crack the tranny remove the old lsd and install the new one. The only thing you need to do is check the tollerances and ensure that you don't need to space it at all. Reseal the tranny with the correct sealant and your done.
IIRC when my LSD was done they just dropped it in, personally if you do go LSD i'd go with Quaife and not a Torsen. I've heard allot of guys blow up their Torsen with high Torque apps. I never had an issue with mine but I was only 170TQ which is next to nothing to what your going to want to be putting down.
IIRC when my LSD was done they just dropped it in, personally if you do go LSD i'd go with Quaife and not a Torsen. I've heard allot of guys blow up their Torsen with high Torque apps. I never had an issue with mine but I was only 170TQ which is next to nothing to what your going to want to be putting down.