Mont. Code Ann. § 61-4-404

Any threat, expressed or implied, made directly or indirectly to any dealer by any manufacturer or by any person who is engaged in the business of financing the purchase or sale of motor vehicles and is affiliated with or controlled by any manufacturer that the manufacturer will cease to sell or will terminate or refuse to enter into a contract to sell motor vehicles to the dealer unless the dealer finances the purchase or sale of any motor vehicles only with or through a designated person is presumed to be made at the direction of and with the authority of the manufacturer. The threat is prima facie evidence of the fact that the manufacturer has sold or intends to sell the motor vehicles on the condition or under the agreement prohibited by the provisions of this part.