Yes, they fit fine in the boots that are my size, but not the bigger ones.
BTW, I cut the stitches in the handmade Mexican boots today, they were an old pair of roughouts (what era is that, 50's/60's/70's?).... plastic bead and pull straps, a paperboard insole, stacked leather heels with about 50 nails and staples in each of the heels. They didn't use a holdfast on the insole of course. and no wood pegs throughout, but the uppers were nailed to the insole all around the heel section up to the sideseam with very short iron nails, and sewed around the 3/4 welt ..... it had a row of stitching INSIDE the boot, rather than using a holdfast to hold the welt and the insole on to the uppers. It had a cloth welt around the inside of the boot (on top of the insole, but under the sole liner) so they must have hand sewed that, unless there is a machine that will do the inside, including the toe area. The heel stiffener (counter?) on the inside of the heel was a very thick leather, about the same thickness as the sole, the outside was the same thickness as the uppers on the boot (no wonder these boots were so heavy !!). I don't know how old the boots are, but the leather was pretty rotten in places, and they had celastic toe boxes, but they've had a hard life just in the time my son and I had them. I got enough out of them that I can eventually use some pieces of them for patterns if I want to, so now I can hide them away for a few years ;-).
I read a thread on the other forum which had people arguing about iron nails v. brass nails v. wood pegs. Some say that the iron nails will rot the leather, and after tearing these apart, I have to agree. The heels came apart in crumbles after I tore off the rubber heel cap, all that's left of the heels are the outside rims - partly because of the abundance of nails, but also because of the deterioration of the leather around the nails in the leather, it was visibly rotted around each nail. I'll be using pegs and brass nails when I get to that point, not iron nails!
L8R .........