That support looks like my 56
I have a 56sedan and laying on floor best i can get. The rad support is bolted the crossember with 2 bolts and the welding on crossmember looks to be replaced.
If you fenders are bouning up and down you crossmember is weak and needs to be replaced.
What I think happened they did the swap and found out the fenders were loose up and down. You the buyer know that.
First years of upper control arms they used the engine mount to help the cross member. What they did was put a rubber mount in the hole were the engine was bolted. They didn't know of the weak and rotted front cross member so sold it. You could take a 1/4" x 2" x 24" and weld to bottom of cross member.
I do believe that mine was changed and have no problems with my 302V8