2 Set's that were rebuilt by Isky in 9/19. These have the latest design Extreme Zone EZ RollerMax bushings designed for up to 1400lb spring pressure. They are also pressure feed to the bushing. These cost 1500.00 new. These are rebuilt and have not been run. Asking 900.00 each set. These are .937 lifters with a .180 offset intake lifter. 4 right hand and 4 left hand offsets.