I've swapped out the original fork for an Alpha Q CX all carbon fork.
Very light! Can't say, as I haven't ridden it, but it looks like it's very stiff, based on the downtube size and gussets on the chainstays (see the website).
Asking $1000 for the frame and the Alpha Q fork. Can include a brand new Chris King HS for another $100.
email directly w/ questions or offers. Pix available.