Back to modding today. But two operations updates since I replaced my head gasket:
(1) Seems replacing the cam seal and redoing the valve cover seal has finally put an end to the persistent oil/fluids leaks I have been chasing for years.
(2) Car running great. I took her out for a couple hundred miles of driving for work/family so far since I finished the head gasket. Other than the p0420, no problems. And that CEL has not come back in 80 miles.