A Montana would be considered an orphan tractor, meaning they may be difficult to get parts for in the future.
From Tractordata.com
Montana Tractor History
Montana model U4984C tractorMontana Tractors was founded with the inventory of AgraCat Tractors, which had filed for bankruptcy. Montana changed the model line, distributing LS Tractors from South Korea. In 2009, LS broke the relationship to sell directly in the US and Montana entered an agreement with Kukje (manufacturer of the Branson brand) to provide tractors. Attempts for a joint venture with Branson failed and Montana stopped selling new tractors in 2011.
Montana Tractors - official site