I more or less agree with the points on why the S65 is a better engine than the 3.4l Porsche f6, but it bears mentioning that Porsche provides more or less equal performance with less displacement, two less cylinders, and a heck of a lot better fuel economy.
if you step up to even the worst GT3 engine, the 3.6, it is better than the S65 in pretty much every category already mentioned, IMO. maybe we can quibble on reliability because of the RMS/IMS issue. and price, since the engine only comes in a car whose msrp is 2x that of the M3
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