D6OE heads

[Madgyver]

Less than 9K miles on this motor. once overheated, had some valve train issues that was fixed but still blowing white smoke out of exhaust.
compression test showed all cylinders 150-160.
leakdown tester didn't tell much difference other than head gasket.

we pulled passenger side head and it looked like this.

I see the issues and there may be more that I don't recognize..
What's your take on this? Opinions welcomed.

 

[Rustytruck]

bad head gasket for sure you can see the bypass at the water jackets and probably misfire on the dead hole or that is the hole with the valve problem. At least an easy fix.

 

[Rightpace]

Cylinder #2 appears to be darkened with oil.could be broken or bad oil ring on piston.compression testing does not prove oil ring is good. If valve seal is good and no detection of oil inside intake manifold or intake and exhaust runner in head then piston should be removed to inspect oil ring condition.the plugs indicate water introduction due to the bright white color. Unless these had been replaced prior to head removal. Intake gasket could be a leaking point for both water and oil.