V8 Sierra's are Australian are'nt they, XR8's, at one stage there were 4 in South Africa, our Sierra is a V6, an XR6 Sierra is 3L, ours is 2.3L, our Escort could be an XR3, just need a few more XR's to complete the sequence. The XR6 was a plastic silver script in older cars and a decal thing on the newer models.
I would have thought the L part of LS stood for Lincoln, Lincoln Series, Stable, Somethinglikethat. I don't think them exported this car, more like it was imported by someone, before our exchange rate went sky high.