Hi Rob,
can you measure the wheelbase? if it is 134 inches it is an F60S. Axles are Ford so it may have had a heart transplant plus maybe another cab added hense the wrong vehicle code tab. The photo you show of the complete vehicle looks like it may have a tipper rear body fitted.
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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"