Exhaust manifold tubes...

I saw a post in here asking what to use to cap off the top exhaust tube once it's been taken off the stock exhaust manifold. Well I ripped mine out and used Acorn style lug nuts Schucks/Kragen/Checker part #30-1741 they are 14mm-1.50. See pic for the package if any confusion

Sorry for making double post but couldn't find the original post

is this for when i remove my emissions system aswell?

Yes the Emission tube that's attached to the top of the manifold once you loosen/take off the tube use the Lug nuts to plug the holes they thread on perfectly