I have a brand new unopened set of Crane hydraulic roller lifters...#13532-16. These are the retro-fit type for a non OEM roller motor like the MK-4 blocks but they will work in a Gen-V or a Gen-VI block as well. $600.00 here with the ride to the lower 48 or $700+ at Summit... http://www.summitracing.com/parts/cr...2-16/overview/