I have no information beyond what I have seen, but there was a silver hardtop in northeast San Jose back in the 1980s (was original owner at the time). There was also a pale yellow (color is recollection) convertible that I saw ONCE (also in San Jose), but I can give you the exact date (January 27, 1983 - the day after we bought our GTS convertible) and the fact that it was raining...