Hi, could anyone tell me if there is a way of telling which rear diff my subaru has without removing it. I beleive it is a uk diff, but cant find a part number. The transmision code is ty752vn6aa. I have the chance of buying a diff with a code Z13B, but without removing rear diff i cannot see this part code. Car is in daily use and needs to be offroad for the shortest time possible.Any help appreiciated as its needs replacing asap....
thanks in advance

 

Can anyone please please help.. just removed rear diff to find part code and its 324a. Just checked gearbox and found code ty752vbcba. But just to confuse matters tranmission type on vin tag is ty752vn6aa, which indicates a uk car. Gearbox however indicates an import. Does anyone have a clue as to what ratio and off what car the diff i can use with these ratios.
many thanks