1974 Valiant Rear Leaf Springs (Canada)
Walk into your local Chrysler dealer and order a set of XHD springs out of the Mopar Performance catalogue. They will order them in and won't charge you for shipping. That's what I did since shipping springs plus exchange rate was going to be quite expensive.
However, if this if your your beater/daily driver, why not just have your existing springs re-arched/bent to get you by?