I have acquired what I believe to be a 2004 Trek 6000 ATB, light grey color, with red Manitou shocks. The seat post and post clamp are missing. I have not been able to find any web site on the internet where I could find the specs for this bike so I can purchase the correct seat post. Any ideas, please ? There must be some web page with a picture of the bike and all specs. Any help would be appreciated. Thanks.