Take a look at what a lot of us have done to the Zukiworld Challenge racers. Longer links and nice long shocks are a requirement. I would also switch to 14 or 16" springs as well, running 220 14" on the back of Project Trouble made a world of difference.
For faster off racing you will want to look at increasing your up travel as well. But your going to be hard pressed to keep up with a RZR. You only have 6.5" of travel on the front end with the strut suspension, you won't be able to keep up with the 14" they are pushing.