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This diff has been in my LFX powered NB; swapped in a new one this week due to this one being too noisy for daily driving. Functions well, other than either a bearing whine, or ring/pinion whine. Has new front bushing and side axle seals. New around $1500., for sale at $100. plus shipping, due to noise. Ratio is 3:23, it's from a 2005 Cadillac STS with the limited slip. Part # 25766310