I got the standard black one that everyone uses and it has the perfect stroke for the CB500t front end I'm using.
http://www.mikesxs.net/mikesxs-suspension.php?category_id=6.3
When making the frame-side bracket, try to keep the damper as close to parallel with the steering axis/frame tubes as you can since any angle will make the damping change slightly at either end of the travel.
http://www.mikesxs.net/mikesxs-suspension.php?category_id=6.3
When making the frame-side bracket, try to keep the damper as close to parallel with the steering axis/frame tubes as you can since any angle will make the damping change slightly at either end of the travel.