I feel your pain! My springs were toast!!!! Severely rusted, some were arched the opposite direction, and...OH, did I mention RUSTY!!
Here's what I found: Suzuki Samurai FRONT springs are almost an exact length-match. It takes a little work (I'm still in the process) to get them to work but...
Those parts are standard trailer pieces. Somewhere that sells trailer parts should be able to get them. I would also check with NAPA and see if they can cross-reference the item.