Originally Posted by unterhausen

If you look at the front wheel clearance of your bike, it wouldn't make sense to reduce it. Absent Andy's suggestion of smaller wheels, there is no way to reduce that front center without making the bike a mess.

Mountain bikers are going to zero length stems. I would get one of those and be happy with it.

I am seriously thinking about building a frame with a 90 degree head tube, a negative rake, and a negative stem length. Because people keep saying those things will make a bike unrideable. Possibly I'll learn something.