Well, if its a 4.1 ratio then I could use the pinion and crownwheel in my diff unit therefore making my unit a 4.1?
Could you find out if it is a 4.1 and if so would you be willing to sell me the pinion and crownwheel.
Do you know which engine the S12 it came from had, if it was an FJ20 then it most likely will be a 4.1.