back on track: the front lsd
i'd be tempted to buy a complete, used, beefier transmission that already has a front diff. adding lsd to your current trans would, as you thought, require opening up and digging around your trans. it's not THAT big of a deal for a decent shop, but you're looking at a good deal of labor in that price tag.
If I was looking for one for the 6 speed would the STi selections work also? I never got a complete answer on LGT.com on what exactly the 6 speed was and whether the rear was an R180 or not.
