Thought I would post some info about the stock Datsun 1200/210 carb jets if can not get the nissan ones.The jets from 2002-2007 honda crf230 fit.I have a 230 and a Dynojet kit and the jets fit.I changed out the primary to correct a lean surge at cruise.They don't go big enough for the secondary.http://www.dynojet.com/jetkits/motorcycle/honda.aspx