That front splitter interpretation did my head in, I emailed and spoke to Ian regarding this, and the response was basically what the rule says it is. So I was still confused as this wasn't an answer, so I emailed Scott beeton as he helped write the rules and this was his response back 27th April, 1.5 version rules.
I've shot an email through to Ian outlining your concerns.
As far as the front splitter length is concerned, I've asked for clarification, but it says that the profile must follow the outline of the front bar, but may extend 150mm longitudinally forward, so this allows for ONLY 150mm forward at any given point in the direction of travel of the vehicle. Where you get to the point that the vehicle front ends, ie, the side of the car, I would imagine that you cannot then go any further forward as you go out to the side.
Anyway, I'll chat with Ian and see if I can put together a document to clarify all of this.
Best regards,
Scott Beeton
Short story, its still open to interpretation so I reckon this year either way will be allowed, just in case we only went forward only.
John I reckon you will be ecstatic when the time comes.