Air-shocks.. question.

[suzq044]

^ this is how we bought the truck.. apparently all-original, except for maybe these shocks? I dunno - but the questions are:

1)Should we restore those shocks, since someone cut all the cords to refill/adjust them; or replace them with heavy-duty standard shocks?
We plan on using it to actually haul stuff.
2) are they in-fact original? like the rest of the undercarriage