Where direction/route should the front cowl water drain on a '65 Barracuda?

It seems the water drained inside when I poured the dye/water mix over the windshield rubber seal at the top (along the roof line) on the passenger side. (see first foto)

We pulled the windshield out, and the sheet metal edges around where the windshield sits is not very rusty (except in a couple of very tiny areas). I will say this, the locking strip that should be installed in the center channel of the rubber windshield gasket was missing.

Now I have to decide if we want to cut the cowl area open and refinish it inside of there or not, before we move on to the more conventional refinishing (interior, exterior, chassis). (On my 1971 BBody, I was able to get almost complete coverage inside the cowl area with tiny paint brushes and a few moves made as if a were a circus contortionist)

DSC04264.JPG

DSC04265.JPG

DSC04261.JPG

DSC04263.JPG

DSC04267.JPG

DSC04268.JPG

DSC04266.JPG