I hope you don't mind, but those jeeps aren't quite correct for Vietnam - Those are M151A2 's, where for Vietnam you want to have M151A1 's. The diffference isn't very big - what's most noticeable are those big turn indicators on the fenders in recessed wells. In A1s the fenders were flat and the turn indicators were small bullet-shaped lamps. There are also some more minor differences - you can read more about it here:
Good luck with your build and have a nice day
Oops -- I see exactly what you mean concerning the fenders being flat on the M151A1, whereas they're recessed for the turn indicator lamps on my two models. Hmm, not too sure what I can do about it at this stage to be honest.
Absolutely everything I build or paint has to be bought on-line and then imported. And that's not just the models themselves; it includes such basic stuff as polystyrene cement, hobby paints, and even fine grit sandpaper, etc. I can't import aerosols, so I once got the wife to take me around a few car body shops downtown in an attempt to find auto primer in spray cans -- and they looked at me as if I had two heads. "Primer? What's that?"
An awful lot of Stateside or UK vendors won't ship to China, so I have to rely on friends to source hobby materials and then send it out to me, almost like "Red Cross Parcels". Only last week, I took delivery of a 10lb package of celluclay a mate of mine in the States sent. The dried paper mache cost around US$50 -- the postage cost US$90..!!
Local superglue works - sometimes - and I can't find gel-type superglue for love nor money. Local two-part epoxy works - sometimes. As for the "fun" I have down at the local Customs Office when they - sometimes - decide to have a snoop around my hobby imports....I'll PM you my latest experience with "officialdom run riot" if you like....several of my mates got a good laugh out of it.
I suppose I could build new fenders from plastic sheet but where do I find that locally? The closest hobby shops I know of are in Hong Kong which is 2000 miles south of where I am and I haven't seen plastic sheets featured in any of their websites. Seoul over in S. Korea is closer and probably has some great hobby shops, but I'd need a visitors visa to get through immigration at Incheon airport.
Sorry for the rant, but you see where I'm coming from?
Please don't get me wrong, I highly appreciate you taking the time to pass on good info I was unaware of, but there are times when I do just have to compromise on accuracy and simply accept that it is what it is....