55-59 the highest GVW 3/4T had optional duals, the lowest GVW 1T's had singles, 1.5T and up all had duals only .... the 38xx is the only thing refering to "weight" [1T series], the xx09 and xx59 identifies the body or model

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 & Rust-a-holics Unanimous parking lot