I did the Ktm fender swap and took a few pics to help other users.
you will need
1) 2016+ Ktm 450sxf front fender
2) 2016+ Ktm number plate.
3) m7-1.00 20mm length bolt for front number plate
4) m6-1.00 tap set with 3/16 drill bit
1) cut out the new bottom holes first to mount the fender under the lower clamp. The new plastic holes are forward and slightly closer together from the stock Ktm holes. I used polisport 2016 Ktm sxf fender. I used the stock front number plate washers for the new holes in the front fender to lessen the pressure on the fender plastic.
2) I used a smaller bit to start the front top screw new holes into the lower triple clamp. It was just a mm or less into the triple clamp.
3) remove fender and finish the 3/16” new hole through lower triple clamp.
4) tap 8mmx1.25 new holes
5) mount new Ktm fender