Check out the new surly long haul trucker. It is a real touring bike and the
frame/fork is going to sell for $400 range. The 54cm and smaller frames are
spec'd with 26" wheel sizes for clearance. You could mount your mountain
bike components. It's going to have front and rear rack mounts, all the
brazeons including a spoke holder. It's supposed to be available in April or
May. It's only drawback is the ugly pea soup green color.
www.surlybikes.com