The tubes on my 68 Barracuda sat on the bottom of the firewall opening as well. It took a second set of hands but once I put the cover plate on and lined the cover plate with the factory holes, this moved the tubes up off the bottom of the firewall opening. It's good that they aren't riding on the opening but bad because now they're under a constant upward pressure. We'll see if that winds up being a bad thing in the future.
