It would appear I have scored cylinder walls in my 2006 4.8is. The dealer has quoted me $28000 to replace it with a crate from Germany. I have SAL extended warranty, but they say because the black book value is of $15000, that's the amount they will cover. That means the other $13000 is on me. Does it make more sense to by a new engine, or scrap this thing. I have 135000 kms.