M38A1 CDN Transfer Case - Versions??

[James G]

I'm pulling a post military life installed Warn Overdrive off my M38A1 CDN2 and need to confirm which transfer case was used before I order a few parts as there were 3 variations of the Dana 18.
My RCEME Parts List & Scales seem to indicate that the same part numbers were used for a number of TC components on the M38 CDN, M38A1 CDN, and CDN2. My TC has a 1.125" Intermediate Shaft unlike the other variants which are 1.25" for the 1967 model year.

Was the same version of the DANA 18 TC (1.125" Inter. Shaft) used on all our CDN's thru the years or could my unit have had an older TC swapped into it?

Thanks,
James Gilbert
North Saanich BC
M38A1 CDN2
CFR: 67-07840
SN: 7105-96887