you might find some NOS original spiral style shocks on e-bay, but I've never heard of a repro or current supplier .... for modern replacements:
front shocks - Monroe 3100 [each] or Gabriel 82047
rear shocks - Monroe "Limited Edition" LE10018 [pair] or Gabriel 82060
['57-'59 3100 uses the same shock as the 3200/3600 on rear]

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