Hi again--i'm the OP. I used all the links you guys posted--thanks for posting. I ended up buying this one:
Future Sales
It is very close to what i need. I talked to CS today, and he said there is a 1.5" range at the "Stop 1" position. This particular model has the beginning of "Stop 1" at 16.25". Very helpful folks at Future Sales, btw, and prices not too bad.
The SPD website does not list the GSGT Multi-Range gas spring, because it is a special order. Their CS sent me a pdf file which contains a description of it, but no data.
Thanks again for the help,
Ron