This guy has both a GSR and a LS open diff
http://www.hondamarketplace.co...2179199-00 SI diff part number: 41100-P21-000
Link: http://www.myhondapartsstore.c...ormal
94-01 GSR diff part number: 41100-P80-000
Link: http://www.acuraautomotivepart...ormal
94-01 LS diff part number: 41100-P21-000
Link: http://www.acuraautomotivepart...ormal