I did a search and nothing. Im running the stock Gaterback 4070425 this belt is 42.5 effective and 43.25 outer. That belt running from crank pulley to the 10% overdrive JS puts this belt at the stop on the idler and is pretty loose. Since is such a short belt i would think .5 shorter belt is all i would need. Looked on Gates site and the catalog is not working. So anyone have a part # or good length to start with.