If one or both head gaskets are blown is it better to repair them or to replace the entire

Hello, for a V6 engine, if equipped, depending on the severity of the internal engine coolant leak (which is somewhat unlikely, honestly, but your question is not about diagnosis, it's about repair direction, so I'll let that go) - and intermix of coolant with the engine oil, it may be perfectly fine to repair the current engine instead of replacing with one of an unknown background. What if you're replacing a challenged engine with another challenged one? It's too hard to know until you tear down the engine what the best decision is for repair. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops