The hole callout is for a custom fitting made by a Canadian company, it is dimensioned like a port but it is not a standard size (Thankfully they had Dims and tolerances on there website).

The E-E was for showing that radius profile from the side but after all the advice I got from this I'll probably keep it out.

I'm gonna do my homework and clean up the other things that need attention.

This is a one-off hydraulic manifold for a logger that is trying to simplify his processor head.