Product details:

GM valve spring update kit. Now you can update your first generation 604 to the new legal Beehive springs. Comes with 16 Beehive springs, 16 locators, 16 spring retainers, and 32 keepers.Legal upgrade for your 604 crate engineIncludes:(16) Beehive springs(16) locators(16) spring retainers(32) valve keepers