I do the heads for two local builders.
They never bolt anything on ootb.
Everything gets looks at.
Sometimes it wasn’t needed, sometimes it is.
If one is just looking for “serviceability” or “functionality”, they rarely need much attention.
That’s not at all the same thing as having them “optimized”, which many heads can certainly benefit from, but wouldn’t be a necessity if all you’re looking for is reliable operation.
The heads that came on our beloved old Mopars back when they were new were hardly works of art, yet most went years and years with no serviceability issues.
