Finally found the time to work on the GZ; The timing chain did snap and damage was good, but the piston, cylinder are ok.
Sprocket was busted up, chunk taken out of the camshaft
Found most of the broken parts in the chain tunnel. The cover has a nice crack but the cylinder is ok.
Going to tear the engine apart looking for more broken parts. Haven't bought any parts yet just looking to see if this engine is salvageable.