higher than any crossfire can put out including my V8 at 612HP i am running srt6 driveshaft,axles and diff with ,,,wavetrac ,,,, 647 runs down the drag strip , + 30,000 miles on the street,,, lost one universal joint, when we had the wavetrac built (yes we had it built for us the forum members), Needswings has the wavetrac ,,,unatrac told us it would hold up to 700 to 900 hp, what are your plans as i can supply any diff from 2.89 to 3.46 gears in a diff ready to install no other diff from any car fits the crossfire,,, if you change your sub frame then yes but so much work needed to make one from another mercedes fit is not worth it.
is your car a limited or srt?