welcome. Many have done the inverted fork conversion on the M2, however im not one of them. I did the XB fork /wheel conversion on my X1. You could use the S3 or X1 forks. Im not to sure on the M2 triple though. Stem would be the same, and i think the triples are the same, again though, not 100% sure. Lots of info on badweb in the tuber section.
enjoy the bike!