This place shows one 1 listed. Great price too, if they really can get it.
oemcats.com
Good luck
GM 10110437 Filler, genuine OEM part
Engine cooling (second design) (1988) GM genuine OEM part.

Tried to order it they contacted me right after I checked out and said they can’t get itThis place shows one 1 listed. Great price too, if they really can get it.
Good luckGM 10110437 Filler, genuine OEM part
Engine cooling (second design) (1988) GM genuine OEM part.oemcats.com
I wondered if that was possible I’m going to look into that or I wondered if it could be converted to the 89/90 set up.Do you have a radiator shop in your area? If so, they may be able to build up something that can replace your old piece. A machine shop may be able to do it too.