i went to put a deposit on my rear lockers for my 90 model NG PAJERO REAR LEAF SRUNG LWB 2.6 LTR,and when looking at the receipt it said i have a 9 inch 28 spine diff for air locker model ARB RD-46. I always thought i had a 8 inch diff, can anybody help me with which diff i have, thanks guys.

