Hrm, did a little research at 300cforums and chargerforums. It seems that nobody there has done the cam swap and some guy said that the MDS hemis wont support a bigger lift cam. I dont understand why....the MDS system is mainly run through the lifters, so how could the lifters not support the higher lift??? Im trying to find the place where I read about the Charger that did it, maybe im going crazy. You should call Comp Cams and ask them, if they say yes then make sure they have proof to back it up.