can you help me identify these ford ecm's?

[85cleangtvert]

i bought a mustang from an auction that had 2 ford ecm's in the trunk. they both look like the mustang 5.0 computers, but they are not numbers i recognize so maybe they are some other model? maybe you guys can help me figure it out... one is U3M2 and the other is E1X. thanks.

 

[jcint]

Did a search and found the E1X is a cougar 3.8 Ford Computer box locations, upgrade your performance & save fuel! - Drivetrain.com

can't find the other i keep getting foreign results on my search.