In light of the interest in that X-4 I searched for this to repost. I am going to PM the seller to see if it it is still around.
http://dallas.craigslist.org/mdf/bik/2884381501.html
Bianchi Proto
A Well kept All Columbus MAX custom tubing Aero steel fork fillet brazed Made in Italy.Components are all Shimano 8 speed All components Wheels and tires are New only used a few times.They do not make bikes like this any more.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk