Yes. That would be an option. We didnt talk too much about it but before I bought my Macan I went by and they gave me the back story on what the issues were, maint cost, etc. He knows I was concerned about a few things. There used to be a procedure where they would drop the engine but that is no longer a requirement. I asked if I should change them out now and he said just wait until there was actually a problem, IF there was one, because most are fine and never see an issue. I have an appt next week for something else and he said he would explain then.Do you mean changing bolts for existing Macan’s?