differential
 

how much do shops charge for installing a diff?? i aint got the skills nor the tools to do installation so i'd better take it to the pros. how much?

it would help as to what year make and model you're inquiring about as it makes a difference. and installing a differential i take it you're wanting to install an LSD?

yea... duh
wrx

^FYI, diff =/= LSD. Don't be a douche. It doesn't get you far in life.

lol I think his question was a very good one, your original post wasn't very informative.

Call advance and the other sponsors. I also hear Rocket Rally iis good to, but haven't been there myself.

I can vouch that advance has very good pricing even with their high end clientelle.