Well, as you said, SR's have SR stickers on the side of them usually, and I believe theyre slightly lower than the sportif standard, could be wrong. Also as you said Glanzas and GTs are fairly obvious. N/A stands for Normally Aspirated, as in Non- Turbo, basically everything other than a GT or Glanza. As far as prices go Id wait for an N/A lad to post, as I have no idea Al.