I appreciate y'all's input.
So yeah, Guitar Parts Resource has these bushings too, which I didn't notice.
http://www.guitarpartsresource.com/t...tsbushings.htm
The part number - TK-0900-001 (Nickel press-in adapter bushings. Converts large peghead holes for use with vintage post keys) is there and I'd rather just order from one place for this. These are the ones you used, Fiddlin Jim.
But...there's also this part number - W-TAB-N (6) nickel finish press-in tuner adapter bushings. Converts modern 3/8"(10mm) peghead holes for use with 6mm vintage style string posts. Correct for Wilkinson vintage style tuners and various import brands.) Which specifies that they're made for 10mm and to me looks like the exact tuner bushings that Stew Mac has.
Would BOTH of these work?