[looter]

They will work, but you to make a bracket for the brake cable and modify the brake tab or brake hub. I have a pair of XR70 forks (same as the CRF70 forks) that are already set up for a 50. It includes the axle, spacer and bracket and brake hub. The only thing it is missing is the top of the bar clamps and bolts. Let me know if you are interested. I looking for $125 shipped.

 

[looter]

You can run either. I a 12" wheel would give you more stability. If want some pics, let me know and I will get them for you. PM me your email address.