EGR Vacuum (Needed!!)

My 82 corolla is my pride and joy, as well as my daily driver. Recently, the EGR vacuum (or so I was told by firestone) has stopped working and needs to be replaced, but I cannot find the part for the life of me anywhere!! If anyone has one, or can find a link to one that I can buy, please let me know!!

P.S: I’ve checked all the junk yards in my area, but apparently it’s a very much needed high demand part, because every old Toyota car and truck had it taken already