To my knowledge they were a standard Civilian car with a few extras like special wheels/ tyres etc added to adapt the vehicle for military use. As such the chassis would have been the standard car chassis of the day.
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Cheers
Cliff Hutchings
aka MrRoo S.I.R.
"and on the 8th day he made trucks so that man, made on the 7th day, had shelter when woman threw him out for the night"
MrRoo says "TRUCKS ROOLE"
