yes, it used to be a good waterblock but since then there have been much better waterblocks made, however i do no not recomend upgrading to an expensive shop-bought waterblock is your is still doinging what it is mean to.
making one is still a posability, as rotors blocks are made with a drill press and dremal, for details construction tips on making a block like his look at this:
http://www.overclockers.com/tips997/ (and look at the c/w rating of 0.07!)