I think by the 70's they'd moved it further back, under the front of the cab - you shouldn't have to do any damage to see it if you find where it is, it'll be quite clearly stamped in so paint doesn't fill it, unless someone purposely filled the stamping .... in which case you might not want to find it eek

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