The stock fork is a Marzocchi 66R and I'm pretty happy with it so far.
I've got a Z1 on my old Enduro and I thought that was a great fork, but the new longer travel 66, is even better.
As far as converting it. Uh, NO!
I've already got a SS, and a SS FS is too complicated. Plus, I need to sell the old one to help pay for the new one.
Yeah, I should have sold the old one first, but I needed to pillage all the parts from it.
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"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger