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 or the solid shoe style WR tappets with these! ** The profile will not work with the roller tappets. 
Set of 4 light weight tappets standard .730" diameter  3.1 oz. made in the U.S.A.  The rollers are made in Japan high quality. 
When you purchase the tappets with the tappet blocks I will hone to fit for no additional cost.
Tappet block cost $750
Tappets cost $339
Total $1,089
Shipping included in the U.S.A