The school is lending him the Selmer Paris Model 40 contra alto clarinet but he need to buy the mouth piece. Unfortunately. I have only seen the selmer paris standard model which is over my price range at this moment. Can you please tell me if the Bundy Contra-Alto Clarinet Mouthpiece model 204 #3 is the same size as the standard. I know the quality is not the same but I cannot afford the selmer brand and this is the first year he starts playing this instrument. He has played a normal clarinet since 7th grade. I don't know anything about music and I am afraid it might not fit.