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The bias is astounding .. GM's LS series engines are almost a mainstay for BMW engine swaps. They've been putting them into E36/E39 Bimmers since 2002.
The truth of the matter is that the cost (and risk) of upgrading the S52/S54 makes it dicey for those who want more power.
The LSX's reliability, cost, and potential makes it a compelling alternative. The fact is, the aluminum LSX V8s are typically lighter than BMW I6's and with a lower center of gravity. Not to mention that reaching 500+ hp without the use of FI is of no consequence.
Now, we're beginning to see swap kits for the E46 models. In fact, if you want to see a great example of a properly done swap, search for "Kato Racing E46 LS7" on Youtube (yes, they did a LS7 swap from a Z06, and yes, it is a real E46 M3)
I don't believe it takes anything away from the E36 or E46 M3 as there are no adverse effects in terms of weight or balance because of the swap.
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