67 Convertible Odd Non-Option

I picked up a 1967 Mustang convertible that looks like it came from the factory with no heater. It has a solid factory embossed cover plate with the slots showing but not cut out instead of the normal heater control cover plate. The firewall also has a factory looking cover plate where the blower would be mounted. The car came from Hawaii. I was told the factory built some Mustangs with this non-option for shipment to Florida and Hawaii. Can anyone verify this? How rare is this? Thanks, any information would be greatly appreciated.

OK, thanks I'll get some posted soon.

No pics yet but I did find this, go here: http://blog.virginiaclassicmustang.com/2015/07/65-66-mustang-heater-delete.html

You could opt out and get the heater delete "option". When you deleted the heater, you received a credit for not getting this piece of "standard equipment."
I've found that having the "heater delete" is quite rare and was usually reserved for Mustangs ordered in Hawaii, south Florida or another very warm climate.