I love Gridfinity and also the Nozzle- and Hotendboxes from "TobiausLE".
So.... why don t combine them? :D
I also changed the dimensions of the holes for the magnets, so they are pressfit.
for the Lid and the Box you need:
for the Bottom:
p.s.: Happy printing, and pls like my Models when you download it, and post a make :D