I have a new set of 16 Morel solid roller lifters for small block engines. The Morel part number is 4723. These can be used on both LA and Magnum blocks. See specs including in the attached photo from the Morel website including spring pressure ranges, wheel size and dimensions. Hughes sells these for $424 plus shipping. I will sell these for $380 shipped in the lower 48 states. I will also sell internationally for the additional cost if any.