I always swap the foam from old radiator side. I also cut off top foam and glue to my new radiator.
View attachment 2014367
A little weight while adhesive sets up.
View attachment 2014368
OEM come with foam and saves time, but at higher cost.
Additionally I R&R cap, thermostat and hoses. Tees if not done and flush once while old in first.
View attachment 2014369
If radiator not cooling as well, it's dirty. The inside will be in great shape if Toyota recommended service guide-line followed.. But what I find in every inspect, once skid plate pulled. The radiator fins are clogged.
Cleaning the fins is a Toyota recommendation most never do!