Looking at the photos, it could have 186S headers and inlet manifold.
But the inlet manifold doesn't seem to have the water heated plumbing there, and the carby was a 2BBL Stromberg, so maybe not..
The hose to the PCV valve should go into the inlet manifold, not the exhaust header, or is it just hanging loose.
The alloy rocker cover......... if it isn't leaking, it is a 1%er. Getting the cork gasket to seal on those was a real head bang.