for 318,340 and 360 engines. here are some parts removed from my edelbrock heads in favor of roller-related parts. those parts include slightly used springs, locks, retainers and new cups. great for you guys buying bare heads or you would want to up-grade your chinese heads with made in usa stuff from edelbrock . summit price is right around 340$. how about half price ( 170$ shipped in the usa or canada) for mine ? make a reasonable offer if the price seems too high. parts are located in montreal, canada.