Originally Posted by dieseldiehard

You are a lucky man! that's definitely an indication someone replaced the head on your engine
I can't remember who had the later head or if it was off a S350 engine but the lines were all the wrong length, so if it has the later angled injector ports then the inj lines had to be replaced to match. Keep that in mind if you ever go to order a new injector line (they fail from leaks when the plastic clips go missing) then you'll need to specify the right line part numbers. O/W I believe everything else is the same.