I put a set of Yamaha YZ Kyb SSS on my 06 model. I used the Yamaha triple clamps, but kept the GG wheel. I had to turn some new bushings for the front axle (Yamaha uses a thinner axle) and make a 250mm brake disk. It would have been a little easier if I had used a Yamaha wheel, but as I have my own lathe etc (and have fun using it) I chose that route. it worked quite OK, and surely better than the old worn out 45mm Marzocchi forks.
But as you go from 48mm Sachs to 48mm KYB I guess the triple clamps are quite close when it comes to the diameter of the fork legs. The offset may be wrong (different), though.
There are a lot of old threads here about fork swaps. You should be able to find quite detailed info by searching the forum.