67 was the last year for the small window as standard [with a big window option], 68-72 the big window was standard, the small window cab was the option .... what will tell if Grandads truck was a 67 is if it had NO side markers, otherwise you need to see the grille to tell for sure what year it was

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics