I would spend the $$ on re-arcing the springs.
Shocks only improve ride quality, they dont hold up any weight.
Of course, check the shackles and bushings,etc..
If your truck has the old knee-action shocks, you may want to change them out for the newer style tubular type. Youll get a much better ride and have more selections for replacement.
You can find fellow 'bolters that are parting out trucks, that will sell you the frame mounts for the newer style shocks.
Good Luck,
Marty
