I got one of my t-lock differentials today. I got it from shelby_stang69 on e-bay. I wasn't pleased with the amount of time it took him to ship it. He told me it would ship on Jan 23 [I won the auction on the 18th] and actually shipped on Jan 31 at 8pm. I'd contacted him several times , asking if it had shipped and if he had a tracking # for me . He didn't tell me the truth. Had he told me the truth I would have given him another week. I won't do business with him again. Now , to the unit he sent me. It is top notch. The spider gears are new , It has new clutches and s - spring. For $50 , $14 shipping and I kicked in the $3 for insurance. I won't do business with him again , but I am going to give him positive feedback , and note that he was a slow shipper. I can't stand people who lie when money is involved. A thief once told me that a man who will lie to you , will steal from you . And after he steals from you , he will lie about it . lol. bob