The sales rep at NAPA told me that NAPA has started to use manufacturers' part numbers for their own NAPA part numbers because having special part numbers assigned for the parts that NAPA sells costs money. For example, the NAPA part number for a fan belt for my '62 Falcon has the same part number as the Gates belt. You might check the NAPA part number for the NAPA struts and see if you can match it up with a part number for another manufacturer like Monroe, Gabriel, etc. Just a thought, but it might help. I guess you could also just ask the NAPA salesperson if they have this info.