There's a guy on Craigslist in my area parting out a 03 and 07 CTS. Will these rear diffs work for a LSX swap. I don't think so but I thought I would check.

Thanks

 

The 07 should work if you want the Getrag vs the Ford option. Best to look and see what ratios they are. I'm using a 3:42 from an STS right now. Same as the 05-07 CTS. Of course it is most likely not a limited slip if that is what you are looking for. See my build thread to see pics of diff I just installed after mine ate itself.