Parting it is the last resort, but mine are Ka heads, just FYI.
Just prepping to pull; found out my neighbor has a stand that will hold it but need to get a picker to pull it; intake off, right head off where the rod game thru the pan; the top of the piston made contact with the head and compressed the top section of the piston, so that's toast.
The list may grow, but right now looking for: piston/rod/bearing, pan, starter.