the new wording for the FAR is in part 61 if I remember right. I found it one day after talking to the FAA examiner I got my Mil comp ratings from.
http://rgl.faa.gov/Regulatory_and_Gu...A?OpenDocument
scroll down to 61.73g for the exact wording, it also has a provision for taking away the currency for getting mil comp ratings if I am reading those parts correct as well, so if you arent single eng current, you can still get your single end land priv on top of the multi