Ladder bars..??..

You can use the SS springs you have. Just remove one leaf at a time on the high side until both sides are the same ride height and you’re golden. IIRC, the SS springs have one or two extra leaves on the high side. Just take them out.
Actually I think I'll have to buy a bigger spring for the left side as I'm only about an inch or two away from hitting the tire as it sets. Then those brackets will make it lose an inch at least. if I did that I might be riding right on top of my tires...