I have put an Ohlins on mine a couple months ago, big improvement however my stocker was quite flogged, I havent rode it on too knarly of dirt , need to upgrade the tires.
I am kicking around selling the ohlins as I may go to a slightly longer shock. i have some XR650 forks to hang off the front, they will need to be shortened to match the rear, it would be a same to pass up the chance of 1-2 more inches of travel.