I performed this mod back in 2005 when I rebuilt the 235 in the '51. It was easy and proved to be quite a time saver when I had to replace the cheap chrome timing cover I tried to use. I highly recommend it.

-Tim
'51 Chevy 3104 w/'56 235, 848 Head, HEI Dizzy, Corvette Cam, Split Manifold and Dual Carter YF's