Series 1 forks

Good Morning everyone , can any one direct me to a pair of replacement forks ( original would be nice )
if as I suspect unicorn horns are easier to come by , can you use the fork of another model with out headset clearance issues.
thanks you in advance
Avanti KTF .....
if as I suspect unicorn horns are easier to come by , can you use the fork of another model with out headset clearance issues.
thanks you in advance
Avanti KTF .....