Gaskets or No Gaskets ?

Getting my 318 back together here…From what I remember, I had no exhaust leaks prior to disassembly…and found NO gaskets in there. What do you think guys? Should I install exhaust manifold gaskets or not? I do have a set that I remember putting on the 318 in my old 70 Fury back in the day. Removed them right away because I had an exhaust leak with them in place. I think factory used NO gaskets right? So…are gaskets only used on warped/well-used manifolds?
Author: furyfever