Leaf Spring Suggestion for 70 duster

Does JC Whitney still sell springs? I got a set of HD springs from them about 10 years ago and just installed them last year. They are made by John R Spring Co in the USA and ride excellently. They were cheap too! About $120/pair 10 years ago if my memory serves me correctly. Look up John R Spring. You can probably buy directly from them if JC Whitney doesn't sell them anymore.