Help plug 72 stock exhaust manifold holes

[CaliLivn]

I wanna remove my smog pump on my 72. I don't need it an it'll give me more room to work on things. My question is what have other members used to plug the holes on the exhaust manifolds or any suggestions? Plus any advice on any vacuum lines I need to plug or anything else once I remove the smog stuff? I'm kinda new to all this an the more I do myself the more money it saves me to spend on other stuff for my truck. Thank you