Depending on the part of the country/world your car grew up the cushions the "bumps" on the bottom corners of the rad rest in should be inspected. All the FSM says is "Fit cushions on body and install radiator", and as I recall they look like they might even find their way out of the car with the old radiator?? Or be in pieces??
Keep in mind I did this job some months back, and I'm old
Glenn