Bios Mods -The Best BIOS Update and Modification Source

So, basically, I would like some help with transplanting some code from one BIOS to another. Both boards are Asus boards. The donor BIOS has the code in it to allow the integrated audio chipset(VIA VT1708s) to enable and use DTS-Connect. My own BIOS does not have the code, but since its the same audio chipset, and both BIOSs are core version 8(open with MMtool 3.26), I suspect it would not be very hard to transplant the correct code over. The problem, is that I cannot identify the correct chunk/part to move over, so, any help would be appreciated.

Donor BIOS: Asus M4N78 pro
https://www.dropbox.com/s/u64z5hrb0tj3tr...O-1303.ROM

My BIOS: Asus M4n98TD EVO
https://www.dropbox.com/s/rzikketaji4p16...S-1301.ROM

Any help would be appreciated, and any ideas would also be appreciated.