When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Both of your part numbers are correct and will work. I usually include the master in all of my clutch kits/install. I would recommend it but it is also something you can do later if you wish unless of course it is bad now.