NORS spring shackles. These are the hollow pin type that press onto the forging that is riveted onto the end of your frame. Complete units.
Front matches Chevrolet part number 602998 for one spring. $75.00 shipped
Rear matches Chevrolet part number 602999 for one spring. $75.00 shipped

A prominent hobby vendor has these (when available) at $145 each

Mike Russell
Columbia MO
573 864 6539, P.M. or direct email below.

ml.russell1936@gmail.com

Many miles of happy motoring