Yea it's a 100mm straight steerer, let me know if your interested, or just want to borrow it until you find something more suitable.

I'll check tonight, but I also think its a straight steerer, but if it works, most major headset brands have a bottom race adapter that will allow you to run it with a tapered headtube, I've done...

Also I have a fox fork, I think it might be a 120 but it could be a 100, I'll have to check tonight, but I'd just give it to you also, if interested.

Edit: now that I think about it, I believe...

I have some sram XO brakes you could have for free, one of the calipers needs a rebuild, the other prolly is not that far behind. Might not be to expensive to do if you can do it yourself.