I pulled the rear seats today to identify where the water is coming in. I had my dad over to help and he ran the hose over the rear window first, then the 3rd brake light, and finally over shark fin antenna.
Strange enough I wasn't able to see any water coming into the cab. The ONLY hint of water was seeing the flaps on the cab vents start to appear wet.
I'd already picked up new cab vents so I decided to replace the original vents with the new ones.
I left the rear seats pulled out and going to wait for several rains to see if there is still water coming in and see if I can identify where.
I sort of thought the source of leak would be obvious, but it certainly wasn't even after running the water over various sections.