Water is now leaking from the cowl into the cabin. Under the grill part of the cowl there is a bit of rust. I can't really access this area so I'm not sure how to stop this from causing anymore damage. The truck is now under a tarp until I figure this out.

Unfortunately, there isn't a cowl delete option like in the newer toyotas so that isn't an option.

What's the next best option?

 

take the cowl off, as well as the fenders.
i bet you've got a rusthole or two to fix.

 

cowl is NOT removable on the 79-83's

but you can get to it from the inside .. it will require removing some pieces ..



.

 

It's a 77. I should still be able to access it if I remove the dash?

Is my best option just to weld it? How difficult is it to remove the dash on these older models?

 

Didn't know that about the earlier models. Well then, i stand corrected.