Join Date: Oct 2006
Location: Oregon coast
Bikes: '06 Trek Pilot 5.2 SPA, '07 BikesDirect frame build, '10 GF Wahoo disc
OK, you need to read that BD CF group buy/build thread again...
If you are getting that frame (or any newer frame that needs an "integrated headset"), you can probably use the Cane Creek IS-2. That is the one I got for the BD frame. I had my LBS order it for me, although I could have got it mail order from a number of places. They put the lower crown race on the fork for nothing...about a 30 second job for the mechanic, using the correct tools. Later, after I had figured out how long to leave the steerer tube on the fork, he cut it for me also.
Be sure you get the proper 'type' for the frame...there's the 'standard' type and a type for Campagnolo/Italian type frames (IS-2i). The frame maker should specify what type of headset to use.
See this Cane Creek web page:
The IS-8 and IS-6 are just a fancier (more $$) version of the IS-2. It's been working just fine.