Truck lock/latch problem...

[Cakes]

On my car the part of the trunk where the latch attaches has a bunch of cracks in it and whenever I go over a bump it shakes the truck like crazy. Does anyone have any suggestions on what I could do to fix this? Maybe add some backing to support it? It just seems very thin to weld. Thanks for your time and help!

 

[Red Regal T]

Make up some strips or squares of auto sheet metal and run them across the cracks and use sheet metal screws to attach or have someone tack weld them in place........or replace the trunk.