Water puddling on the passenger side floor?

[silvrbreez]

Whenever I park/drive the truck during a good rain, I get water coming into the truck and puddling at the base of the passenger side kickpanel just forward of the door sill. It's enough to soak the carpet, but it dries rather quickly.

I've done some troubleshooting and it appears to be coming in from the cowl on the passenger side and then leaking down the far passenger side of the inner firewall and through a few screws holding on the a/c components and firewall pad under the dash in that area.

I've looked under the hood and all the gaskets/seals visible to me without removing the cowl/hood seem to be installed and in decent shape.

Any thoughts on what this water is getting through to get into the cab?