Air pump injection tree

[franklinstower]

I am beginning to clean up, complete deferred maintenance on the '78 sc I just got.

intro here: New owner and first 911

I am starting with engine and tranny mounts. While I am doing this, I was curious about the air pump. The air pump was removed, but the injection tree is still on the engine. I would prefer it gone, what does one use to cap the ports in the head?

Thanks,

Paul