Agreed, but you can buy an LS3 for about the price of one cylinder head of the S63nu, and just factoring in the cost of adding an LSD to an F30 plus a tune and the ATS with an LS doesn't seem that expensive.
The lack of manual transmission availability in the ATS, and the as yet confirmed weight mean that it's likely to miss the F30 in most enthusiasts picks, but hopefully they'll get the ATS-V right.
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