After spending two hours reading through some very informative posts I felt compelled to join. I'm a recent first time purchaser of a previously one owner 2008 Mazda 3 hatchback with 165,000 miles. While the car has been well cared for I'm aware given the mileage I'll be spending time keeping it in good condition. Perhaps a 2.5l is in its future. From what I've been reading the 2.5l from Ford is both time consuming has me wondering if the 2.5l from a 2010 and later 3 would be less complicated fit into 2004-2009 3's?