I have a 2002 Giant OCR-3 that I'm looking to put a carbon fork on. The steerer is 1" threaded and it's got a Giant adjustable quill stem (which I'm also looking to replace).

I guess the simplest thing to do would be to find a 1" threaded fork thats the same size but I've heard a few different things about the integrated headset that Giant used on these bikes. I've been told by one person online that they went with a 1 1/8" steerer. I questioned this and they advised that the only reason the bike has a fork with a 1" steerer is because Giant uses some kind of headset that acts as a reducer.

I've seen the latest OCRs which now all have 1 1/8" FSA integrated headets. I've spoken to Cane Creek via email and they told me that Giant has never really been specific about what the setup is (!!!!????). I spoke to a few LBS guys... and they just look at me funny. I've looked around for an email link for Giant but have come out emptyhanded. I know how the people at Chris King feel about the whole system.... I'm starting to agree.

I'm wondering if anyone has any experience with converting this kind of bike and what they used.