Over the years I've tried many subcontractors in the trades of plumbing, HVAC and electrical. For the last eight years or so I've used the same guys and have created a very good working relationship with them. They have all been in this area for many years and are stable and dependable. The quality and loyalty they provide far outweighs any "saving" I would get from going low man.
They are: Davis Plumbing, davisplb7@yahoo.com 406-892-2532.
Dave Havener Electric, http://www.generators4u.com/ 406-257-8951
Carson Brothers Comfort System Heating , http://carsonbrothers.us/comfort.html 406-752-2778