I've seen several re-necked Fender basses recently. One bass had a '58 Precision body and a Fender neck from the '80s. Another had a '60s or '70s Precision body and a replacement neck with a Fender decal. Then I saw a bass with a Warmoth body with a Fender Jazz neck from the '70s. So why were the first two basses advertised as vintage Fender basses and the third as a Warmoth bass with a vintage Fender neck? Why does the body determine authenticity and not the neck? Isn't the neck the most important element in determining feel and playability of an instrument?