OK I have a gentleman looking for some parts for a 71 B body, a 3 speed wiper switch being one of them. I have pulled a couple here (see pic)from 71-4 B clusters with the # 3488766. I searched ebay for a baseline price, and see this switch listed for E body (correct for 72-4 the ad says) I looked up the part for all 4 years B or E and come up with 2 different #'s, both of which seemed to go straight NLS, not superceding. Is this switch goint to be right for him? I just want to be sure I send the right stuff. (I think it is correct)