I made the cut-out in the Firebird firewall larger today so that I would have more room for the ductwork under the windshield. The A/C ducting will be a bit chaotic under the dash as it is, so I wanted as much room to work as possible. There's also a lot of electronics that needs to go under there...
One side benefit is that the three inch deep glove box will now be much, much deeper!
Bill the Engineer