Bayside01

Hey everyone, I’ve got a 1978 280Z that I’m in the process of restoring. The plan is to make it “OEM plus” with a 3.0 Rebello. I might start a build thread for fun but for now I have the chassis stripped down and am starting to tackle the rust areas. One area of rust that I hope the community could give some insight on is the area at the corner of the cowl that meets the inner fender and windshield. The car sat in a yard in the Conroe, TX area for years and I imagine rainwater pooled up and did its thing. Has anyone had rust here before and if so what would be the best way to repair it? I also noticed that the fresh air shaft/vent for the HVAC blower motor is pretty rotted out. How bad is it to remove the cowl sheetmetal welds and tackle it from above? I appreciate y’all’s time and any input to tackle these areas!