This rebuild/reseal kit is for Spirit/Spurs and derivatives that use mineral oil.  This kit is not for SY (Shadow) cars using RR363.  This is the most complete kit available as it includes not only new Nitrile O-rings but all new retaining rings and the seal for the fluid feed pipe as well. 
BTW can rebuild your pumps for you for $120 ea. which includes the cost of the kit.  We also stock pump repair parts if needed.