I took the time to weld in new mounts for my Beast, so that I could use Yamaha Raptor shocks, but in retrospect Yamaha Blaster shocks might be a better fit. What is important to note is that bumpsteer isn't really a problem with Beasts, since the control arm vs. tie rod lengths are so similar. That assumes that the shocks are mounted to stay outside of bumpsteer.
I took the time to measure the range of motion when I was working on TurboT's quad, and you can read about that here:
http://www.chinariders.net/showthread.php?t=6291&page=4