I don't see the necessity of going with an aftermarket system when a factory engineered system already exists. The only reason I could see to consider one would be if there was more horsepower than in the SRT version. The price makes it unattractive for me.

It is obviously possible to convert the non blown 3.2 to the blower version. The only real question is what is the simplest (ie time and money) way to do this? The mechanical bits should be a direct bolt on, whether from an SRT6 or some Mercedes. That leaves the ecu programming to deal with. Is the OBDII system in the crossfire flash programmable? If so, mods to that unit would be the way to go. If not, an ancillary ecu (piggyback?) to handle fueling and timing issues under boost would be an option. A third option to look at is bringing in the entire ecu from an SRT6 and program it to forget about its transmission duties. A 4th option would be a standalone new ecu (ie, an AEM type) that has the capacity to handle the supercharger - AND more!

Which Mercedes models of the 3.2 V6 in the xfire were supercharged? This information would be very helpful in tracking down used bits to put on the xfire.

Right now, the car I am evaluating has about 7,000 miles on it. The ability to add a blower will have a direct bearing on whether to keep this car or not. Right now, it is just a hoot to drive, and of course I love the style. It would just be a LOT more fun with 330 HP vs 215.

One minor point, anything that looks like a xfire has a real hard time being consider a sleeper. Most people that have seen mine already think it is faster than it looks. A sleeper would be my 1991 SHO, as it obviously looks like a Taurus, and 99% of the world has no idea what the SHO on the bumper means.

Henry