The reason that they call them different lengths is because none of the non OEM belts are the correct length, wide, or cut angle. Also the IPL shows two belts for your drive system. If they are not changed at the same time they will cause drive issues. The 954-0467 and 954-0468 have to replaced as a pair. The difference between the 754 and the 954 is the 754 is a loose belt, whereas the 954 is in a display sleeve.