Fork angle is a little bit steeper than stock--2.5 degrees on the protractor. The pictures do make it look unusually steeper than it actually is.
I did this because I read an article that intrigued me and I wanted to try something a bit different.
Here is a link to the article:
It really sounds like there is only beneficial factors attributed to steeper steering angles...IF...you have forks that withstand the forces associated with braking-- which I feel the 48mm WP's can probably handle pretty well. We'll see in a few weeks.
And yes, you can mount a 21" dirt tire and still clear the pipes and front cover with a couple of inches.
With the stock frame mounted in place I made a fixture that would support the new steering tube and allow me to change the rake by a couple of degrees. see earlier pictures in this post.