Not sure if it's a geographic thing, but down here (Greater New Orleans Area) most of the turbo cars we find are targa or sunroofs. Many of them are *fully* loaded with all the options (auto, leather, TEMS, ABS, etc... the works). Haven't run across too many turbo hard tops, I believe there's 1 or 2 in our group, but as far as the several that have passed through the hands of our members, hard tops of any variety seem rare down here. My 90T was born in West Palm Beach, FL and started its life as a Turbo, Targa, Auto, w/Leather but NO ABS or TEMS.
As I said to, geographic location may play into it. Southern weather may promote sunroof and targa sales.
Too bad we don't have a nice breakdown of production numbers like
the MKIV folks do. (Yes, I know there are discrepancies in that list, but it's something.)