MC is in the middle of deciding our schedule for next year. We are looking at playing the NWPS again but may decide on simply playing PSP.
Your best bet for contacting the majority of Montana teams is through the state's biggest forum
Off the top of my heads you could contact there:
Great Falls Awesome/Bannana's
Since I have been playing out of state last year I am not up to date on the newer 5 and 3 man teams. There are probably 5-6 additional teams that I am not aware of. The teams listed are mostly old guard teams that have been around for 2 years or so.