I just did this today on my 02 d2 and used a KDT3472 to get that bolt off. The Park headset wrench was my second choice, they make great stuff but bikes have all gone threadless finally! You do need something to hold the pulley. Btw - left hand thread or right hand thread - its normal, lefty loosey, righty tightey. Put the wrench in your right hand and the pulley holder in your left hand and sqeeze them together. It can't be that tight.