Beefy and sleek is a great way to put it. The neck has narrowness of a jazz, but some meat to grab onto. All of the jazz basses I've owned were not fenders, so question: is this a jazz neck with a precision decal or is this something else?
Good question. Certainly the lack of blocks and/or binding meant they were not going to be bolted on a Jazz, but I don't know if they were finished-out with more "meat". My '75 A certainly has a deeper "grip" than any contemporary Fender Jazz I've owned or played.