The M102 is looking great. The Fire Base dio is a great idea, but the jeep you show is not correct for Vietnam. It is an M151A2 which wasn’t fielded until 1972 and very few were sent to Vietnam in the last couple years of US involvement. By that time, major combat units had already redeployed.
You need the Tamiya M151A1 if you want a jeep on the FB.
I know; I merely used it for sizing up the available space on the base.
I do have the correct M151A1 kit on my build stash, which I already stated that I will build and add to this diorama.
Gave the inside of the exhaust covers a base coat of white and those can go on later. Also attached the center grill (air Intake? )
Also found a pot of AK off white, which I am thinking of using on the overall external colour when it comes to painting … White is never that white or pristine, especially on a tracked wagon…
I have purposely left off the front and rear mudguards until tracks are on. I intend to completely paint the wheels and then paint the lower hull, get all that assembled and finish off the upper hill and turret …
Right Johnny the grill is the engine fan one.
Good luck with the white paint.
Olivier
Thanks Olivier 
… And the AMX is looking nice in the black primer Bert
Nearly all the turret is done now, just a few bits to add and the PE is finished on the rear
Nice, must say one can really see the improvement over the years in detailing of kits 
Some colour on the AMX…
Dilemma time again …
Have done a base coat of AK RC 013 off white …
Now I quite like the off white… But I’m not sure if it’s not white enough…
You can see what the flat Tamiya white looks like on the sprocket that’s on the turret roof for a comparison …
Not sure whether to do another full AK coat and then weather the wheels to tone down the flat white, or do a thinned mist over of Tamiya flat white over the AK off white … ???
Oh, yeah - I see - yeah, I would mist it with the flat white myself. It needs to be a little whiter.
Yeah, that’s the way I leaning towards… Cheers Matt
It is hard to tell what colour it really is from the pic John, but I wouldn’t go too bright on the white:
The AK is definitely more off white… Going with the various images online, it needs to be whiter. I think an over spray of misted Tamiya white should sort it out … Fingers crossed 
UN white is white!
The only nation using off white in UN service is China.
Olivier
Never knew that about the Chinese
It depends what you call white. The additives in the paint medium change the shade from pure white - if there really is such a thing. The real issue is scale appearance.
Vallejo does White, Foundation White and Cold White all very similar, vivid whites, and much brighter than their Off White, but the shade difference between them is not noticeable until you put them side by side.
Tamiya white it is …
Here’s the hull that’s had a flat white coat, and the turret next to it with the AK off-white… Easily see the difference.
And the hull and turret complete…
I didn’t realize what a beast this is! That is some kind of turret.
Yeah with the barrel off it looks like a Star Wars plasma cannon. Looks good in the white.
Time to get a bit dirty …
Have detail painted the hull and the bits that needed doing. Just need to find some small white unreadable square decals for the 3 fire extinguishers that are fitted.
Have applied a light AK OIF wash to the wheels, then I did a heavier wash with Flory dark dirt to the wheels again and the lower hull sides and belly …
After that I mixed some dark mud and industrial dust pigments and applied those sympathetically to the hull lower sides and front and rear plates.
Will start weathering the tracks tomorrow and painting up the back rubber on the return rollers
