Hey guys new to the forum been having some issues with my 83 blazer it’s the 4x4 with the 2.8/T5. I just bought it a week ago and first day had to gut the whole carpet front and back because it was wet and already started to soil wasn’t a big deal until we got a heavy rain and the passenger floor had almost a gallon of water. All my seals are fine. It’s coming from the firewall right behind my air box. I have seen some posts about how it could be my raintray under my wipers is rusted out at the firewall. Can’t find too much info so anything can help