i used the V2 Mount with the outter most holes, and the spacer to mount my BTT TFT50 inside the screen case from this design:
https://www.printables.com/model/445961-btt-pitft50-screen-case-mount-for-v-slot-ender

as the original authors screen case didnt work with my V2 screen ( cause of the ribbon cables sticking out atleast 1-2mm on one side, and are not able to bend tight)