yes, all 3S engines have this problem. most of the problem comes from slack owners who allow them to run low on oil. this causes a big end bearing to let go and thats what causes the crack to occur

if the car has spun a big end how likely is that the metal has gone though and damaged the turbo bearing and the head can the metal be flushed out easily

is the gen 2 block the same as the gen3 ?? if there is a diff how hard is it to put the gen3 head on the gen 2 block???

an engine with a spun bearing needs complete strip down. the turbo is fed on the pressure side after the filter. it may be Ok, may be stuffed. the gen 3 head bolts to a gen 2 block, but there are numerous differences. if you tell me exactly what you are tyring to achieve by doing that, I can assist