I agree with what's been said above. Like
Blckshdw suggested make sure your radiator is fully down (the one image looks like it could go down a bit), but it does look like radiator "tabs" are missing. Let me share a story why I say that. Way back when, like 1983 a buddy of mine had a about a 1973 Oldsmobile with a 350 in it. It required a new timing chain and gears and I volunteered to replace it for him. When I was removing the RADIATOR I noticed shims under the "clamps" that GM designed to hold the radiators in place. I thought this was extremely odd. The packaging did in the 1970's on the small block radiators by GM was almost fool proof. Two pockets under the radiator and two "pocket" type clamps on the top that would only fit in one way for a guaranteed fit each time. But this one apparently needed shims to make it work. Very odd I thought. Very odd. Well I removed the clamps holding the radiator down (along with an assortment of shims!) and removed the radiator. Lo and Behold there was Something under the radiator! Can you imagine a 24" long Snap On Screw Driver! I thought I just hit the jack pot. So being the nice guy I sometimes am I called my buddy and told him this line " Hey George, I understand when a mechanic finds tools in the customer's vehicle he gets to keep the tools. George replies "well I guess so... (now George didn't have any mechanical ability at all so I know it wasn't his screw driver) and if I say no, you keep the tool anyways, but I say Yes just to learn what tool you found. So of course you get to keep it, but just tell me what it is. George's jaw hit the ground when I showed him the screw driver. He walked away just shaking his head.
Here is a current photo of screwdriver left under the radiator with a common screw driver next to it: