k3 horns on a k5 manifold?

Main Train Horns
1

I am about to get some k3 horns with no manifold but I can get a k5 manifold. my question is can i use the k3 horns on the k5 manifold and just plug the other 2 ports I don’t need?

2

Yup that’ll work. I have seen block off plates.

3

Do you know where I can get some new cork gaskets for the bells?

4

I have seen them listed here:
http://www.microprecisiongroup.com/shop/category.asp?page=2&catid=5&sortby=name

I believe Hornblasters is an authorized dealer for them.