Alright so here's what I've conjured up so far. The BIOS mod is going to be a little harder than just transferring over updated Microcodes, here's the dilemma: (click spoiler to see the image)
(Original 1.60 Bios left - Modded 1.60 5:4 Bios right)
So the difference between the ROM files are actually a lot deeper than I expected. The main difference we need to worry about is the biggest highlighted box at the very top, the other boxes were either descriptions, flukes or fail safes (Changing the Default DRAM frequency option).
After a lot of research and pounding my head off my desk, I was able to find out that the BIOS Modules are what contain most of the features a BIOS has, as well what is in the background. Though, Google is no help what so ever so a lot of this has been guessing and checking
Now when I search BIOS modules for an AMI Bios or modifying BIOS Modules in general, you get posts about how to change OEM keys and backing up RAID profiles or something about RAID.
Now after some work, I was able to actually find out what those changes meant
Basically the DMI (SMBIOS) and the Single Link Arch BIOS have changes in their size and their location inside the BIOS. Now I just got a hold of a program that allows me to modify the DMI to see the differences between the two, but I'm unsure if I'll be able to modify the SLABIOS (easier than saying Single Link Arch BIOS).
If anyone else wants to throw themselves at this, please do because this is giving me a headache
So in the end, I'm speculating that these Modules have the changes that were applied, just hoping that there aren't any other fixes that need to take place
EDIT1:
I'm going to see if copying over updated Microcodes from the 1.72 to the 1.60 5:4 BIOS will do anything. if the updated Microcodes are the changes that made the overclocking more stable, then this will be a lot easier than expected. Though, if the extra data inside the new 1.70 modules are what helped with the stability, this will be a rough time.
EDIT2:
Can someone run the attached DMIEDIT.exe (inside of the .rar), click the
File drop down while inside and then Save All, while running on the 1.60 BIOS and the 1.60 5:4 BIOS?
It's going to save a dump of the DMI's inside of both of the BIOSes
Want to do a comparison but it seems I can't find my P4 so that I can actually flash the BIOS