Water Leak in Cowling??

leaves and shtuff fall into the cowl and collect water which helps create rust...

I have the same leak in my 68 dart, not the pivot seals, might be around the windshield but I have replaced the window and seal, only thing left is the cowl.

thinking about doing a repair like the above shown, but since I do not weld was thinking fo trying to me a removable panel that I can use if I need to clean out the cowl area again.