the 57-59 columns are the same, and the turn sig is the same for all 55-59 and a seperate removeable assy .... doubt you'll find anyone at NAPA who knows what you're looking for, you need to have the parts in hand to try to identify

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