Hi there folks. I've been trying to identify the year and specs of this bass for some time. The serial # says that it is a 1976, but the neck looks to be pre-CBS, and there also seem to be some differences in a few of the features. I know the P-bass pickup was put in, and that the nut was changed to put in a low B instead of a high C string. Can anyone tell me their two cents on the rest of the guitar? I'm particularly interested in whether or not you think that 29" is a proper scale measurement for this axe, it is full size. What scale sounds right? How would i determine it? Any input is appreciated! Thanks!