For the likes of you and me Ammo any blow up is a big one.
As it happens the cylinder head is stuffed along with 4 valves, both cam shafts, camchain, piston, and spark plug. Have you seen the price of those high tech clever spark plugs.

I'm going to try a rebuild it myself for no other reason than the pleasure of knowing I did it.

I've tracked down parts at a decent discount although I did find an Americian website that did OE parts very very cheap but they won't ship outside of the US.

11 months and counting