need spacers
No, don't do it. It sticks out way too far, you'd just be grinding the fork. Trust me, I tried it.
The Magray plegs. They're way too thick to work on an SMX. You can run it with spacers but it sticks out too far. If you have an SMX, Chromos are the only way to go.
LinX probably. VertX makes pegs that fit the SMX though.