Ford Truck Identification

[Bob Moseley (RIP)]

Hi gals & guys,

I'm reposting this topic as whole thread was lost in the last crash just as I was posting the possible answer to one of the below questions.

THIS WAS THE LOST THREAD

A Ford collector friend of mine has asked me to solve, through the forum, several questions he has had over many years.

1. He has two trucks fitted with American cabs with the following data on the engine side of the firewall,

AM21T81 AM21T81
3190 2796
UGN UGN

What does UGN stand for?

2. He has four CMP 13 cabs with CGN stamped on the panel on the left-hand side of the engine. They possibly could all have been 15cwt trucks. What does CGN stand for?
3. What does "Divimpro" stand for? The origin of this word is from,

Identification Manual
Ford Motor Company of Australia Pty. Ltd
1942-45
Model "218TF" (DIVIMPRO)
"2IT" (CANADIAN)

Year 1942-45
Model "218TF" (Divimpro) 2IT (Canadian)
Type Truck
Engine No. Prefix BB18F (218TF) 3C - F (21T)

Bob