So, some of the e-50s came with a stock 3 shoe clutch? Or are you just saying some one might have upgraded prior to your purchasing it? I am about to rebuild my first e-50, and I want to do it proper, like brand new styles, if not better. I am willing to drop some cash on it, Obviously all new bearings seals gaskets rings etc. Is the perf clutch worth it? Mine acceleration is lacking, but I hear the one speeds are just kind of like that. After the rebuild I am getting a boss, or maybe a proma gp, haven't decided yet. I think the most I want to do to it is like a 60cc kit, a cheaper pipe, a nice air filter and obviously a proper jet.