1970 Chrysler Newport exhaust manifold nut size

Hey guys,

I am tacking the mysterious ticking noise I have had when the engine is under load coming from the drivers side engine. Upon close inspection of the manifolds I noticed the driver side has a gasket while the passenger side does not so I assume the driver side was removed at some point. To my somewhat pleasant surprise I noticed one of the studs is missing a nut and I suspect may be part of the cause of the exhaust leak. The stud and threads are intact and look fine.

Does...

1970 Chrysler Newport exhaust manifold nut size
Author: kingbowl93