Originally Posted by
hermanchauw

Generic quill stem with stainless steel shaft. Available up to 300mm height.

Shim 22.2-25.4mm, shim 25.4-28.6mm, threadless stem of your choice.

Result.
Many questions for this.
Primarily though- why not just use the quill stem and a 26.0mm(or 25.4, whichever it fits) handlebar? You would get the bars at the same height and only probably 1cm closer to you...that seems quite minimal in difference and less of a process than purchasing a threadless stem plus 2 shims.
This bike is quite interesting either way though.