Here's a zip file containing the modified stadium, as well as the DDS files for both the retired numbers and the Worlds Series title years. I've also attached comparison shots of the original game file versus the updated version. (As you can see, I changed the order of some of the numbers.) In both cases, the textures seen in the "modified" version are 4 times the original size. Obviously, some work would still be needed to get everything to line up correctly - it's a little hard to put everything in the right place using a blown up blurry version of the original :-). Of course, they no longer display the WS years there at the actual stadium - it's now a huge picture of Steinbrenner casting a somewhat creepy glare over everything. By battling through Blender (and a little trial and error work on the UV mapping), I think I could replace that display with the picture.
Another thing I noticed: not all of the textures are exported to DDS files that can be opened by Photoshop. In those cases, I was able to use the 2KModTool to export the texture I needed (from a non-RED MC saved version of the file), and that imports back into the file using RED MC just fine.
Yankee Stadium Texture Test.zip