The answer that I received from parts people at two different dealerships (one that just looked at a parts diagram and one that researched it), the answer is: No, the flares from an E70 M or MSport package won't fit on an E70 regular.

If you find a different answer, please let me know. I'd like to get paintable flares for my 35d. People have said that they've painted prepped black flares, but I haven't seen any pictures.