69 4 speed hump measurement

Does anyone have a good reference measurement to install a 4 speed hump into a 1969 Dart?

The car I have now is an automatic and I have a AMD hump. Just looking for a distance to put the hole at. I do nor have the engine and 4 speed to install to reference the hump. I want to send the car to the body shop to start work on it.

Sorry I do not have the time to d a search at this point.

thanks for any help or ideas