DW3000 integration

Theoretically, if I were using a customized version of the DWM1004c module with its provided TWR firmware, how difficult would it be to swap the DW1000 for a DW3000. I want to utilize the security feature. Is it as simple as changing it out on the PCB, and then adding a section of the preamble in the firmware for the security part of the standard? Is there some guides or example codes for this? I really want to use this product!

Is it possible to buy the chip by itself? I see the schematic for it, is there any example firmware? How different is the firmware?

For others confused search DW3220. I am not sure if I can buy it yet, but I looks more possible. Also, I think the firmware is not available so maybe I will just go for it based on the datasheet. Wish me luck.