I'm looking at a couple of NOS Dogma frames (not the FP) and have found a 2004 which is the right size/color as well as a 2005 that is the right size and wrong color. Are there any differences between the 2004 and 2005 frames/forks/headsets?

I was told by the distributor that there weren't any differences. Most, if not all of the Dogma non-FP's sold in the US were 2004's anyway: once they went to the FP in 2005, that is pretty much all that made it over. I am pretty sure they can be distinguished by the font of Pinarello on the downtube.

Sorry only just joined this site there can be a diference in frames, a sure way is to check the seatpost make sure it's 31mm I had a dogma it had a31.5 post and it broke I have an FP DOGMA now it;s a 31mm post, reason been the early frmes were made to thin and alot of dogmas broke I no of at least 4 not counting mine, so be awhare