Just completed the metal removal/installation of the inner and outer cowl panels for passenger side of the cab. Now working on the driver side I'm wondering if anyone has taken a piece of sheet metal and cut/pressed louvre for the inner cowl panel. I found the new panel for the passenger side took a lot of work to fit as it didn't fit as well. The driver side is not as wasted and could reuse the section with the louvre and slot for the outer vent. The new panel for the driver side doesn't have louvres, thought I could use it and just drill some holes to let the air in when opening the vent, any thoughts? thanks.