Hellgate Corvette Club, Missoula MT. Treasure State Corvette Club, Helena, MT. Hyalite Corvette Club, Bozeman, MT Central Wyoming Corvettes, Casper, WY. Classical Glass Corvette Club, Cheyenne, WY. Snake River Corvette Club, Twin Falls, ID. Valley Corvettes, Boise, ID. Corvettes of Dakota Territory, Bismark, ND. Sioux Falls Corvette Club, Sioux Falls, SD. Spokane Corvette Club, Spokane, WA.