i'll use mostly dodge trucks
( seem's that the Levant administration bought a lot of trucks in Egypt, mostly US commercial trucks )
i think that the dodge truck will be released , some day, by Perry's
the Chevy used as 75mm Portee was a model built by John Hart ... on the basis of a LRDG chevy .
some ford were used too ( quite the same buid than the LRDG chevy , so ... ) and some ford pickup too ( may be diecast avaible in ranges such as lledo )
may be using Gaz trucks with small modifications ...
using the diecast Siku White truck is an other option ... ( you'll found some on ebay )
keep in mind that the French army used trucks ranging from 1000kg to 5000kg .