If nothing came thru the cases or cylinder wall you probably okay with that...
The sleeve is definitely toast...the cylinder MIGHT be re-sleeve able but odds are against it...
Piston obviously gone...odds are the piston broke at the ears where the wrist pin is...and rod/wrist pin hammered into the top of the combustion chamber...valves are toast...head MIGHT be re usable... I'll give a 20% chance...
The big question really is what is the rod look like...
Odds are it didn't break and wrist pin is still in it...which is the only reason why your cases survived...however, I give that rod a slim and none chance of being re-usable...It may not have broke...but if it isn't tweaked it would be a miracle...
So realistically...you are looking at a complete tear down... rework crank with new rod...re-use cases and most of low end parts...add a billet middle gear support...new sleeve, piston, wrist-pin, valves, probably cylinder and head...
Nice work...did you do something stupid like drive it... :lol:
j/k...