Umm - the 1.65 mod file contains "1.6" in the very first line, "#modname", which is what is displayed in the mod selection menu. If you right click on it, the mod info displays, "Conceptual Pretender Gods 1.6, Version 1.65".
But as should be obvious from my looking so closely at it, I think it's great stuff. Thanks to both Zen and Edi!