The cowl vent had a trough to catch water. It had a tube which I assume had a hose connected to it at one time in order to direct any water to the outside of the car. The trough also had parts of the hinge assembly attached to it.
The spot welds were cut out and the trough assembly was removed. It didn't take up a lot of space, but every little bit is going to help on the AC install. Its removal will also allow for a bit more rust removal.
The pocket for the hinge mounting plate needs to be modified to clear the window channel. So does the pocket for the door strap. The hinge mounting plate also got trimmed slightly. The channel fits now with a full range of adjustment. Time will tell if this is good enough.
Cutting was difficult due to the cramped space. Also, due to the location, it is difficult to see the parts and operate the air tools at the same time. Some of my air tools had the safety trigger taped open to ease operation
After determining what the new bracket needed to look like, a dimensioned drawing was made. Then the part was made. It fits great and positions the motor pointing straight down. I will have to make a new lower bracket to brace the motor against the brake pedal support. The lower bracket here may fit if modified, but not as is.
The New Port Engineering 2 speed wiper motor and switch came from Chevs of the 40's today. A quick install showed the motor pointed right into the AC unit. I decided the best way to handle this will be to rotate it down so the motor is approximately vertical. The motor lower bracket can be braced to the pedal mount. I will have to make a new mount out of 1/8" plate.