The Yamahas around here consist of small single cylinder Enduro's. I love all the Y series bikes,even though I don't currently have any. Mine are:AT1,CT1,GT1,LT2,JT1. I just finished a '74 Kawsaki F7. It was nearly given to me ,so I rebuilt it. I'm not sure why. Its a beautiful "green bike" with low miles,but I don't know what I'm going to do with it. There's a '75 F11 here that would make a great project. Whats here is in real nice shape and otherwise complete,but missing the motor,the pipe,and the oil tank. It came with the F7. My favorites of the Japanese bikes are the Bridgestones though. CPC Is Certified Parts Corp. in Wisconsin. Check with Richard here first. Is your DS6 an upswept pipe version? The YM2C is a Trailmaster?