Technical Heater Core removal from a 56 Buick Century

Today I removed and installed a heater core on my 56 Buick Century..I didn't have to remove the fender; 9 screws, 3 on each side 2 on top and 1 on the bottom and it with the box came off and you didn't have have to take the hood hinge off neither. ..just have another person to help hold it place... Just a little info just in case somebody needs it.