Do you have any pictures of these broken ones?
How were you driving that thing or loading it to break both spring packs? The only time usually is way over loaded or if you try offroading or try to catch some air. Some combo of that.
I woudl just go to a salvage yard and pick up a pair from a low mileage truck. I can find a number of packs with 60K on the for $100.
If you spring packs are done my bet is you are in need of new shocks and sway bar bushing. Maybe some new bump stops up front.