Yes get some pictures under there, I would be looking for a spring from a 40 / 41.. two door or fordor sedan, I thing there are one or two more leafs, than your original 39 coupe ??... The change out of the spring is not an easy trick, need a good jack, jack stands, a good spring spreader, a hand full of tools , and sometimes a "band-ad" or two. and did I say beer, for your helper ?? I admire your going UP and not down,,, yes the right way to go. for a better ride, and looks good too...IF it were me I would rebuild,( re-ark ) your original spring and maybe add a leaf or two ... but thats just me ....OLD.....BILL