Perfect replacement would be the neck from a Classic 70 Series (MiM) Stratocaster. Vintage (tinted) neck, vintage radius and vintage frets.
It looks very close to a 1976 neck except the serial number (back of the headstock) and the added CustomBody sticker at the top of the headstock.
Great necks and they have a u-profile, they are 3 bolt and micro tilt - direct
You can often find these necks (with the "F" tuners) on Ebay -- often for $300, sometimes less.
Be advised though......regarding the re-issue "F" tuners, they are dimensionally not quite the same as the originals. The bushing is smaller in diameter -- thus, an original set of these tuners from the '70s will not fit the re-issue headstock without some "adjustment".