Rear sway bar for 1964 plymouth valiant

Well, good luck. The thing is, the OEM 340 springs in my 65 Barracuda sit more like the lower picture of my Valiant. And the 65 Barracuda's factory HD springs, which are now in my 67 Barracuda (formerly slant six, now 360), sit more like the upper picture. So I'm not sure how much you can rely on Espo's (or anyone else's) +1 or -1 or 0 description. ????