Originally Posted by bigdog1250

If it's not broke, don't fix it. Why does the engine need to change to make it worth while?

It makes significantly more power (the #'s BMW released were super conservative), it's a few inches wider and has a beefed up suspension on a car that already was sporty. It looks super badass. The interior is much nicer and sportier. And as mentioned above it wasn't that much of an asking price.

I don't know why you'd want an M3 with that thing on the market.