You have two problems. The neck heel width is wider than the pocket on the Squire and the pocket is not cut as deep as standard.
For the first, you can either sand or route out the pocket width, which prevents you from installing the original or any other neck, or you can shave (narrow) the neck heel to the standard width. Shaving is difficult because you need to shave just below the fretboard without damaging it. Best would be using a mini-router and a guide.
Next is the depth. Squires are thinner than a "real" Fender. A standard neck sits too high and requires raising the bridge a ridiculous amount. Same solutions and dangers. Route the pocket deeper or shave the neck thinner. Routing the pocket is easier because you have a nice flat surface to work with. Shaving the neck you can end up with a wrong angle or worse, a twist.
So the easier way of routing the (expensive?) body, and potentially chipping the finish or gouging out the opening of the pocket, or risk the fretboard and alignment of the (cheaper?) neck. Doing the body makes it "Big Lou" only. Doing the neck makes it compatible with all Squires if you cut the sides and bottom, or all Fenders if you cut just the sides.
You have two problems. The neck heel width is wider than the pocket on the Squire and the pocket is not cut as deep as standard.
For the first, you can either sand or route out the pocket width, which prevents you from installing the original or any other neck, or you can shave (narrow) the neck heel to the standard width. Shaving is difficult because you need to shave just below the fretboard without damaging it. Best would be using a mini-router and a guide.
Next is the depth. Squires are thinner than a "real" Fender. A standard neck sits too high and requires raising the bridge a ridiculous amount. Same solutions and dangers. Route the pocket deeper or shave the neck thinner. Routing the pocket is easier because you have a nice flat surface to work with. Shaving the neck you can end up with a wrong angle or worse, a twist.
So the easier way of routing the (expensive?) body, and potentially chipping the finish or gouging out the opening of the pocket, or risk the fretboard and alignment of the (cheaper?) neck. Doing the body makes it "Big Lou" only. Doing the neck makes it compatible with all Squires if you cut the sides and bottom, or all Fenders if you cut just the sides.
I am curious as well, I am looking to put a 2" neck on a Squire Stratocaster. Cant wait for them to be back in stock