Out of curiosity and boredom, I was looking for info on a procharger for the M8 and what kind of power they can make, only to find that they don't make a kit yet. Given that it's been out for 4 model years, I found that odd. I sent an e-mail to Drago's and he said they're still working on it. I would think the differences between TC and M8 system's would be minimal and it would have been released long ago. The only thing I can think of is that there's some sort of technical holdup. Procharger already offers a kit for the new 7.3l Ford, and that's only been out for a few months.
Just heard back from Procharger. They should have a model released this summer.