I haven't had to have a transmission worked on here in Billings yet. Two places I would call first are Standard Transmission and Hansers. Hansers, an auto salvage place has lots of used parts and might have one to replace it with, maybe with a warranty, they will do the work also. Ill post the numbers when i get home in the morning. The guys at Rocky Mountain Cummins have been very helpful to me in the past and might have a good recomendation. 406 245 4194 They might be closed on saturday though.