the monty carlo i have is all from the lot no add ons no mods i have the 3.73 rear end in it i blew it a part. casing is good .the axles are good. it is limmed silp. i have a used rear end, i got for free from a buddy. i have put one in befor just not in a car so i need to konw what the speck's are or where you can tell me i can get them so my rear end dose not fall apart going down the road or lock up can you help thank you

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