Question for you, Spiro:
With your cowl missing, do your windshield wipers "fly"? Meaning, do they lift off the glass at highway speed? When I got my 94 back on the road, the cowl was destroyed, so I took off the few bits that were still screwed on. Weeks later I reinstalled the wiper module (easier to do an engine swap without it, and with no rain in the forecast, I deprioritized it's reinstallation for later). Ever since, my wipers both lift a little off the glass at highway speed and they leave big swaths of unwiped glass behind them. I even replaced the blades thinking the old ones were a bit limp, but that doesn't have an effect. The only thing I can think of is that the cowl might help keep air that enters though the grill from coming up between the hood and glass and it keeps the wipers from lifting off. Your experiences would be helpful in my troubleshooting.