Running without screen attached

Hi guys.

I have this 27” iMac that still runs great, but the screen broke.

Now I was thinking of running a 27” 4K monitor as a screen for the iMac.

I had the idea to take apart the iMac and put it in a custom case so it’s lets bulky and looks cool! Now I know that there is a temp sensor on the screen that makes the gpu and fan go crazy when it’s removed. Is there any “easy” way to get around this, so I can build a cool IMac Pro “tower”?

Thanks.