Amazon Store Data Entry - repost

I have a large list of product part numbers and applications in Excel format. This data needs organized into a manner that works in an Amazon store The store will need the data categorized by make/model/year/chassis for browsing and searching using the source data in the excel file. No data will require changing, as the source data is complete and valid. This just needs processed into Amazon Store format, with appropriate categories created and populated on Amazon. Full access to the Amazon store will be included of course. We feel that this could be massively automated with shortcuts within Excel and within the Amazon Store data entry process, just we dont have time.