Funny facts...

[BYprodriver]

Originally Posted by The French Dude

So I had some news from my mechanic.
Apparently my Box is one of the rare 2003 with dual row. LN sent a single row since it's a 2003.
But now they don't want to return it because for them 2003 has single row and not dual row and the package has been opened.
I went to my mechanic to see it by myself, and that's it 2003 can have some dual row.
By the way it is in perfect condition.
So I contacted LN by email but they never answered.

2003 Boxster engines are substantially different from previous years & I don't believe any 2003 engines came with dualrow IMSB. Maybe your car has a older replacement engine or engine case with the original heads.