Sorry I still don't follow. You're brazing a bar onto a stem, so how does that make the stem any different to how it was (other than having a bar permanently attached)? I may have missed something.
Sorry maybe I wasn’t clear. He’s cut a one piece into two piece and has used the stem piece with a new bar.
What I mean was for him to use the old Nitto bar section which is currently not in use, with a new steel fabricated stem which is a single rather than double tube. But wider.
More girthy