Change of oil and found metallic spring etc inside - need your advise.

[DAVID GAGNARD]

With the kind of damage you have, I would not trust the engine, you don't know what little parts/pieces went were and could have damaged other things, I would pull the motor and do a complete teardown and clean up everything........if I remember correctly, you said you drove the car like this for some miles?? There is a good chance that some of those broken pieces got "slung" around the internal moving parts and easlily could have damaged the crank/rods/camshaft....I just wouldn't trust it,till I knew for sure that there was no other damage internally...
On the opposite side, there is a push rod out of the lifter, did the rocker stud break on that one also??
2 things I noticed, the intake gaskets do not look like the correct ones for the cylinder heads, they'll work, but they cover part of the intake ports, the other thing is the push rods with pressed-in balls on the ends..I quit using that type years ago after pulling a motor with a few thousand miles on it and finding 3 of the balls missing, one was in the oil pan, the other 2 were ground up in the engine......I only use one-piece push rods...

Still wondering what type of cylinder heads are on the car, can't tell from the pictures...

David