the only way this makes sense to me is if there is more proven support for modding the 230 engine and they are getting great performance. the V6 is a great engine and mechanically not hard to mod. The issue is the MB electronics and how much trouble MB went to, to make the electronics hard to mess with. It is only a matter of time before we see more and more modding on the V6. I personally like displacement and the MB V8's are relatively light since they have alumunum heads and blocks. I think the I4 conversion would be very doable if that is what you want. I believe it would actually be harder than a V8 since there would be way more parts to buy and swap, while the V6 and V8 are indentical except for two more cylinders. I wouldn't do this unless you have a proven plan and recipe to get you where you want to be. Just keep in mind that your car is wired for a Bosch ME 2.8 and swaping in anything that wasn't wired for this computer is going to be very tough and you may not get it to start after all the wirring. even my n/a V8 conversion had a bunch of reqirring to do and the supercharged V8 has a lot more but at least these conversions use the right computer family. this is one reason I would not consider some of the other more exotic MB engines such the 63 AMG engine.