>>5904531You might end up with weird aesthetics, what with the head being super stylised and slender, and most of the bodies being the opposite.
Dollzone B60-005 (1/3) has a neck size of 9.3cm and the aesthetics might suit pretty well, and you could divvy up the 13mm between both the head and the neck and make it an 8.5cm hole/neck width rather than an 8cm one.