I've recently resprayed a trek SLR 1500 from 2006/07 from what I've heard it has a trek specific semi integrated headset and won't fit a generic one. Was wondering if anyone knew
2006 1500 - Bike Archive - Trek Bicycle
2007 Trek 1500 56cm - I Know a Guy Bicycles
Classic Trek 1500 SLR 2006 Upgrade: The Result - YouTube
2005 TREK 1500 Alpha SLR, 54cm, Discovery TdF Team Colours For Sale