For the US Army off the top of my head there was two Corps HQs. The 163rd Idaho National Guard Armor Cavalry Regiment which had been re-equipped with M115 (IIRC which were m113 with LAV-25 turrets on them).
Here is where the information
http://forum.juhlin.com/showthread.php?t=519
8th US Army
II US Amphibious Corps
23rd Regiment, 4th Marine Division
Subordination: II US Amphibious Corps
Current Location: Inchon, South Korea
Manpower: 700
Tanks: 7 M60A3
5th Marine Division
Subordination: II US Amphibious Corps
Current Location: Kaesong, North Korea
Manpower: 2000
Tanks: 9 M60A3
16th Regiment, 6th Marine Division
Subordination: II US Amphibious Corps
Current Location: Weijei, North Korea
Manpower: 600
Tanks: 4 M60A3
II US Corps
1st Brigade, 7th Light Infantry Division
Subordination: II US Corps
Current Location: ?
Manpower: 500
Tanks: None.
Notes: The 1st Brigade was trapped in North Korea after the run for the Yalu River was pushed back by victorious Soviet forces breaking out of China. The 1st has been out of contact for 13 months now. It is known they are actively making their way south.
26th Light Infantry Division
Subordination: II US Corps
Current Location: Yujiaitu, South Korea
Manpower: 500
Tanks: 13 LAV-75
45th Infantry Division
Subordination: II US Corps
Current Location: Pusan, South Korea
Manpower: 2000
Tanks: None
VI US Corps
2nd Infantry Division
Subordination: VI US Corps
Current Location: Seoul, South Korea
Manpower: 2000
Tanks: 4 M1
25th Light Infantry Division
Subordination: VI US Corps
Current Location: Firebase Alpha, North Korea
Manpower: 600
Tanks: None
41st Infantry Division
Subordination: VI US Corps
Current Location: Firebase Juliet, North Korea
Manpower: 2000
Tanks: None
163rd Armored Cavalry Regiment
Subordination: VI US Corps
Current Location: Firebase Neccessity, South Korea
Manpower: 300
Tanks: 4 LAV-75
These units are still contact with the remains of the North Korean Army supported by Soviet units after their victory over China.