Still wondering if I need to seal this gasket and why these two holes are blocked.

http://s1372.photobucket.com/user/foxj12/library/?view=recent&page=1

It is the top left photo. Where I'm pointing shows how the gasket blocks off that hole and the other hole two cylinders to the right.
Does this gasket need a sealer?
Thanks fellas!


1970 Chevrolet C10
Grandpa's -- My first truck -- In progress to shiny
Follow the build in the Project Journal
1950 Chevrolet 1-Ton Dually
"Ole Red Girl"
In the Stovebolt Gallery
More pictures here
1951 GMC 9430 1 ton dually--Shiny! | 1972 Chevrolet C20- Rusty- the puzzle box lid for the C10 | 1962 AMC Rambler American- my wife's
Parts trucks-
1951 GMC 9300 | 1951-GMC 9430 | 1951- Chevrolet 1300