Prior to 1965 heaters were optional - thus no "heater delete". If you did not tick off the box for a heater/defroster, you got no heater. And the instrument panel came with the needed blank off hardware.
If you are looking for part numbers, and what is needed, the following are the groupings in the 1965 parts catalogue -
Without radio - 23-33-12 to 23-33-14
No electric clock - 23-33-20 to 23-33-22
No radio speaker (instrument panel) - 23-33-42 to 23-33-44
No defroster or heater - 23-33-65 to 23-33-73
Mouldings for instrument panels - 23-33-86 to 23-33-87
Should also point out if you are using the Canadian edition, Canadian-built Dodges used Fury instrument panels.