Ah ok, I wasn’t getting the scale, it looked like the threaded holes were water bottle boss spacing to me.
I’ve not had any experience with the new integrated shifter but would have thought changing to sone nice thumb shifter might have been a better option?
https://www.aliexpress.com/item/1005003287030559.html?spm=a2g0o.cart.0.0.eec238daXvCQWa&mp=1
essentially if levers and shifters are combined it separates them so you can run different levers... I think