The anti roll bar link in Marlins race car (its hidden by the steering rack but you can sort of see it:
http://www.msportster.co.uk/data/marlingvisit29.jpg
Looks like it might be exactly what I need for the back of mine as its just a little short one.
It can also be seen on some of the Sportsters at Stoneleigh:
http://www.msportster.co.uk/data/st06-047.jpg
http://www.msportster.co.uk/data/st06-035.jpg
http://www.msportster.co.uk/data/st06-044.jpg