Had a 78' that sounded amazing and from what I remember it definitely had more of a fat low end overwound kind of character about it. I remember trying a 60's reissue sometime back in the late nineties or early 2000s and thinking it sounded thin in comparison. I miss that P bass. Great maple neck too, I don't think Fender was doing one piece maple necks then anymore. I only traded it when I was in college because I needed an upright case and the finish was Antigua.
Turns out it is a one piece neck. I just bought the bass back last weekend. Sadly the original guard ended up getting tossed along with the old pots. The new pickup is a vintage P replacement by Rio Grande. It sounds nice to me and the bass is giving me goosebumps.
More details to follow