80cc 2stroke Cylinder head

[Sgtnergz]

Dies anyone know what the measurements are for the cylinder head of 66/80cc 2 stroke motor.
1)what's the distance between the holes are?
2)what's diameter of the 4 head bolt holes
3) the diameter of spark plug hole??

 

[Tyler6357]

The head bolts are 8 mm studs
Spark plug is a standard plug