Replacing serpentine belt on '95 Volvo 850 turbo wagon

My husband is having trouble figuring out which belt to use. Volvo updated the routing pattern of the belt so different belt is being used than the original. The new belt was way too short(it was 63.5"), about 5 inches shorter than the one he took off. Does anyone know what length the new belt should be, and/or the part number? Thanks.