Bit of a frustrating one this - i'm looking for the part number of the ZIF socket used in the G3 and G4 Yikes models. I know its PGA-288 but they seem to just not exist! The one i have is an AMP branded one - i just snapped the heatsink mount off it
Sure it's an AMP 916668-4 or 916668-1
There's a reasonably priced one on Ebay right now.
https://www.ebay.com/itm/160817100155?hash=item257172357b:g:~mUAAOSwishc1yZx