Guys, do any of us ACTUALLY have the skills to interpret and build a product to these regulations? How on earth can we be saying the rules are vague when we have no appreciation of whats involved - hence my use of the phrase "apparent ambiguity." Lets leave it to the engineers to sort out and no matter how apparently inferior and confusing the S2000 regs maybe, BTC and WTC teams have shown equally competitive cars can be built and raced - it's up to the guys in the workshops to make the most of what they have from a set of rules that appear more centrally focused on the base showroom offering. Means the manufacturers will have to offer you and I something better in the road car (if they are to be successful racing it) and makes the marketing boys and girls happy because they're actually promoting the sporting pretentions of the model in their range!