Here in the US, the 1975 YZ125 was still a twin shocker, the 250 and 360 B wre, of course the 1st year monoshock YZs. ..and yes a 125 A ( or B for that matter) were little more than mx 125s. Still, my friend put an nos Noguchi kit on his in late 1992, and while it only went about 4 races-it flew. We wanted to put a C engine in it, but it was illegal, so sold the C for chump change..if only we could go back and correct our mistakes.....