Originally Posted by
alexdc
The easiest conversion seems to be the 3.7 M112 from the ML350 W163 from 2003-2005. Straight swap (minus a fan clutch swap). No wiring needed or custom work or anything close to it (from what I read). I plan on doing it in the future. The motors are super cheap at any junkyards. Extremely doable and cheap swap. One of the cheapest ever for a car..
what he is not telling you is any srt 6 will be faster, get better gas mileage than a 3.7,, your V6 is a 3.2 ,, so yea go from a 3.2 to a 3.7 if you are going to swap do it with a 5.5 SC motor, on the aspirated 5.5 mercedes engine (non supercharged) a modded srt6 is still faster.
the fee would run what all you want done to the car, but average i would say close to 22000. engine tranny, brakes, new tires and about two months of good weather,, when my next one is finished,, gray srt ,,, turn key ready to drive 25000 that includes the car. no trade