1965 Barracuda- Restomod
after you remove the windshield with out breaking it,,there are screws in the channel for the dash,,,then there should be a bolt on each side under the dash behind the kick panel,,
leaks are usually found under the glass in the channel pitts or rotted holes,,usually in the corners,,you will have to either weld and grind smooth or try some sort of epoxy in there to seal it up,,,,some times the windshield wipers are leaking thru the top cowl mounted posts,,