WR Tappet Blocks. Made by Flathead Power. These tappet blocks are made to run roller tappets. Made out of gray cast iron. You will need to get angle ground cam lobes from Leineweber so your lobe angle matches your roller angle. ** You can not run the OEM cam lobes for the solid shoe style WR tappets with these! ** The profile will not work with the roller tappets. 
Pictures coming soon
Thanks for looking. 
Contact me for availability. 
$750 shipped in the USA