dude you can drop an LSD into the GSR hydro tranny quite easily. Im gonna do a compelte write up on mine when I get it and isntall it. You need 2 diff ball bearings from honda, order them at acuraoemparts.com for $33 each. You need 2 and you need an 80mm thrust washer to set thrust clearance between the tranny case and the diff. I bet thoe whole deal will cost me $300 no more.