JMiller, it most certainly is a Mdl 94 with pistol grip or a Mdl 64 lower tang. The friction stud is in the link, not the lever or lower tang.
Here is a pic from my 1972 Mdl 64A showing the double mainspring and flat-bottomed hammer.

The screw boss is now cast into the lower tang, whereas previous mdl 64s were made with a bent lower tang, and show much more variance in the amount of curve to the lower tang, lever and resulting pistol grip.
The Model 64 lower tang is a little more than a curved 94 tang with an angled boss for the stock screw:

The only hole I can't identify in the rather blurry photo is the middle one. It is offset from the center of the tang, but is spaced and on the wrong side to be the trigger block safety interrupt. Wish I had a bottom picture of Bobcat's mdl 64 as it would show the same holes and spacing (less the "extra" one in Tycer's pic).
Joe, the '86, '92, & 71 models do not use a trigger block safety, so that would also be wrong. It is too short to be a '73, and I've not seen a pistol gripped '76. The scale and such seem to be just perfect for a mdl 94 or 64 Winnie. As is the lever.
Tycer, the mainsprings for all 94 based Winchesters are the same for the period in which they were produced.