I recall seeing a few posts on here saying that the petcock sometimes makes it difficult to lift up the back of the tank without scratching the paint on the frame. I've removed my tank several times with both the OEM petcock and the  raptor, which I have on now, without any trouble with either.

You do have to disconnect the electrical connector under the front of the tank for the lights in the speedo housing, and the speedometer drive cable. Disconnecting the speedo cable from the crankcase and leaving it attatched to the speedo housing is easier but it can be done either way.

My bike is a 2006 but I don't know if that makes any difference. I doubt it but I could be wrong.