If it has DFI then it's a newer 9A1 engine with no IMS or the accompanying failure problems. That's a fairly good price on the low mileage 2008 911S. I'm assuming 6 speed? The 9A1 engines didn't appear on the Cayman until 2009. The only lubrication issues with the new 9A1 engine are due to high sustained turning forces during racing conditions.