What attaches to these two screw holes? The holes are in the back of the intake manifold, right underneath where that 1/2 inch hard line attaches (the hard line that runs horizontally across the back of the engine; one end screws into the back of the exhaust manifold, the other end attaches to the back of the intake manifold).
I tried attaching a picture, but the picture file size is too big.
I'm assembling all the pieces onto my new engine. Everything is accounted for except these two screw holes.
Thanks,
Jim