I have a few Volvo automatic transmissions used and in good working order that I personally pulled from running driving cars. These transmissions had absolutely no issues when removed from cars that were being converted to manual / standard transmission. They have various mileage from approximately 115,000 miles to as much as 300,000 miles. I have seen these transmission with as much as 700,000 miles. They are solid transmission when properly maintained. At any rate, these work well. I can give you the torque converter with it if you'd like.
These transmissions will fit most P80 cars, 850, S70, V70, V70R, V70XC. If the shifter on the car you are working on has P R N D 3 L this is the proper transmission for the vehicle. Some countries have different gearing etc for different cars, however, I do NOT believe that is the case for the US market.
Contact me if you'd like more information. I have tagged them with known information and mileage.