Thanks for the tip about Kuxy's mod. ill give it a try.
I really like Unichest though (if factorissmo could work that would be amazing and i appreciate any effort you put in). I had found two other mods previously.
One would send items from its box to any marked with the same ID which was basically pick any of two items filter and put those on any box you wanted to receive those items. But it was random which box it sent to and could send to a box you didnt want at the moment. it also sent every item in it to the box (that would fit) so for it to send to a different box again it would need to be filled again. and it was random which it sends to so it could easily send to the previous box instead of a different one.
Another one was similar to Unichest in that it was the same inventory for all linked chests (this is one of my favorite things about Unichest). But you had to link it via a selection box. So if it was a far away box, it could be really unweildy to use. Also if any other linked box was between them youd have to make a line of other boxes and select each one along the way til you got to the box you wanted. then go back deleting the boxes on the way. That one also it was real easy to delete those boxes and you lost anything inside it. That doesnt happen with Unichest.
But ill see how this Kuxy one works. I made a post on the Unichest mod discussion about "Force Inventory Insert" mod. I also posted on that mod's page 2 weeks earlier but no response yet. Force works for normal quality items but if you filter Unichest to uncommon, rare, epic, or legend, it no longer forces items in. Im not sure which mod would need to be altered to fix that.