If it helps to fix my broken spring I bought some straight spring wire bent it to the same shape as old spring put it in the oven at 350 to set the shape and make it springy New spring looks the same and works the same as oem
I saw a 1963 440 wagon 383 on facebook marketplace in Kennewick Washington that looked interesting been sitting in storage so probably needs some work 1 owner he has lowered the price once Good luck