I am sorry I don't write or speak Japanese but I want some one there to know how big a mistake yamaha made by not producing the GL750 two stroke four. It would have sold bye teh thousands before air polution restrictions would have ended it's sale. I personally worked for two years to save up teh money to buy one in 1973. that was two years of hard work for nothing but a show. It's truely a shame yamaha doesn't produce a version of this now. with sythethtic oils and other advasnces in tecnology I sure tehj two stroke can make a come back. I was recently in teh mountians of North Carolina USA and I was driving down a twisty road when suddenly I smelled teh exaust of a two stroke motorcycle. I knew bye the smell it was a RD350. I caught up with the guy and he said he had bought it off e-bay in pristine condition. It almost made me cry to remember my old RD350 and the GL750 I expected to buy. Two strokes may be daed but they are still riding around and mazda doesn't seem to have any problems with it's wankel engine.