A year ago BMW had suspected that metal had gotten into my engine as a result of a small accident that I was in lol... Anyway, my insurance company was going to pay for me to get the Dinan Stoker engine instead of a new replacement since the Dinan was a few thousand less than a new one... But after further testing, they determined that current engine was fine. I was kind of disappointed. I literally already had my name on a Dinan engine in the warehouse and it was ready to be shipped out... And you are correct, with a salvageable core, the Dinan engine was going to be about 25k.