Ritter disaster

I am a retired Mechanical
Engineer / Six Sigma Black Belt that made a career out of casting and machining blocks and heads.
It is AJN’s in today’s world of casting and machining that semi machined blocks or heads would be supplied without prior dimensional
knowledge of:#1 the part as it is delivered
#2 exactly what the part needs to make it fully functional, with information on: remaining finish stock, datums, key dimensional positions.
But then again, I am a Slant Six guy and being able to buy any Slant Six performance block or head parts is a pipe dream, so the group that I run with knows how to roll their own.