Mystery Leak on my 85

Alright, my truck is leaking pretty bad into the front driver floor board. I took the kick panel off, and tried finding where it may be coming from but I don't see anything....I am going to go to the pressure wash today i guess and try that approach also.

I tried to see what the cowl looked like and it looked pretty solid, just the random leaves and all. The doors seal good from what I can tell, it doesn't let water in if sprayed by the hose.....

My guess would be the heater core, but thats nowhere near the kick panel.

Plus the core is on the passenger side. Maybe a small rust hole in a bitch of a spot. Maybe a leak in the windshield gasket?seal.

Plus the core is on the passenger side. Maybe a small rust hole in a bitch of a spot. Maybe a leak in the windshield gasket or seal.

i cant find shit. i just took the fender off and all. would it leak down in the cab if the cowl had a small hole? and is there a chance of finding it from lookin under the dash?

if worse comes to it, i can shave the cowl, but would the vents still work?