Help with sizing new holders for Pro Tacks

[iknowkungfu 0]

Have some 2004-2005 pro tacks that just had a holder crack, thinking about replacing them with Tuuks or something with a more aggressive stance, what size should I be looking for? Boots are size 7D (40.5)

[Buzz_LightBeer 973]

Should be 263, but what size are on the Pro Tacks now?

[iknowkungfu 0]

271 right now