Tell me where the cover on your differential is? is it on the top or on the back? this will tell me what diff you have and i will then know what you need for slave cylinders. A friend of mine,Pat makes excellant replacement slave cylinders for the oc12 differential,i highly recomend them. Doug H Pat is a member of this fourum,he goes by snowcat Pat,if you need to contact him,i can also give you his no.