That Sprint one said it does not require mods but how does it mount up. Can't really tell by that picture.

 

The aluminum bracket goes under the center nut on the triple tree. I think (but not postive) that the black bracket is fixed to the frame under the front bolt holding the fuel tank, replacing the rubber bushing that is there. The pic shows two fasteners on the black bracket, while the 93-95 900's only have one fastener on the front of the tank. It might just be a stock photo and not the actual one that ships when you buy. Go here and they have a couple pics of them installed, but not really close up:
http://www.sprintdampers.co.uk/

 

Ive got one, Pm sent!

Randy

 

I found some other pics and they do mount up to the steering head and front tank mount

http://www.vancosport.com/_wsn/page23.html

So unless that is a stock photo and they have some with one hole, or you want to drill one in there the 2 hole one wont fit early 900s