So i bought this 01 xj a while ago. Lifted, 33's, regeared, ARBs. But the PO was an idiot who just took a loan out any time he wanted something done and paid to have it done for him. He thought he had a teraflex kit when he really had a RE. thought he had a flowtech muffler, really had a flowmaster. Anyways, he didn't know what gears he had in his axles. So i'm putting on a sweet SOLID diff cover today and found this on the ring gear. O30456TJ. Does this mean it has 4.56's in it? Thanks for all the help. It's been bugging me not knowing what gears he had put in it.