Busted Camshaft!

[Creamy83]

So, I'm writing this on behalf of my friend who I sold my '83 300TD to last year, to request some insight.

The camshaft failed on her while driving on the highway, which makes me think there is more severe damage than just the head, but this is where I would like some insight. I pulled the valve cover today to inspect the damage, the info I was going on prior to now was from a mechanic who she took the car to after being stranded, but I'm always skeptical of shops . They quoted her $3000 to fix it (replace the head), and I told her to tell them where to put their $3000.

So, I know that without pulling the head I can essentially know nothing valuable but I wanted to know the worst case scenario. The camshaft broke into 4 pieces, (timing chain still intact) and bent one of the valve tappets as well as the rod that the tappet pivots from (what do you call that rod?). Worst case is that a few of the valves shattered from the remaining piston movement correct? And probably damaged the pistons? And potentially ruined the cylinder walls?

So again, without pulling the head which I am considering either doing, or not doing (and just replacing the engine) what is my better bet?

thanks yall