Self-Leveling rear suspension question

[Kristophe]

When I was changing my rear brake pads recently I noticed coil springs instead of "air springs" and it caught my attention since I know I have the air pump assembly underneath the spare tire. I think I've heard that air pump running before but admittedly I've given the rear self-leveling little attention mainly due to other more pressing mechanical concerns that are finally addressed. Obviously the previous owner replaced the air springs with coils likely due to unknown problems with the system and went the budget route.

Is the rear self-leveling system worth getting back in operation? Or just leave as is? I know replacement pumps can be $500+ in addition to $100 each for new air springs however I'd consider working on getting it back in proper working order if it's really a worthwhile feature to have. It could also be a very expensive project, huh?

The truck rides fine other than needing new shocks that I'll be replacing soon with Sachs I got for 20% off.

Thanks guys