Got mine from Chassis Engineering. No goofy buttons, or lumps. The leaves do taper nicely toward the ends. I don't know if the stock original `32 did or not.
'32 springs were snipped at the corners of leaves for a sort-of taper, Ford stopped doing this and left them square after some time in '33. Looks to me, also, that actual Ford springs use multiple thin leaves while aftermarket use a smaller number of very thick leaves.
My Chassis Engineering front spring has 7 leaves approx. 1/4" thick. No bumps or sliders. http://www.chassisengineeringinc.com/chassis-engineering-catalog-content/
Oldcarguy77 sales one without buttons or sliders but reversed eyes Sent from my iPhone using The H.A.M.B. mobile app
I prefer genuine Ford springs. They are made from the best spring steel, and have thinner leaves than most after market springs, resulting in a better ride. They can be trimmed & beveled for improved performance. With so many builders using new springs, ask around & try to pick up the original springs that are being discarded.
'32 fronts have I think 10 thin leaves. Aftermarket that I have looked have about 7 very thick ones. Very. Rear springs come in different stacks for different body styles. They can probably afford to lose one or two, but are not terribly stiff stock. I know some model A springs were tuned with leaves of different thicknesses...haven't really examined '32's that closely. If it's '32 I don't ask further questions. Street rodders are America's greatest resource for Old Ford stuff as they upgrade to Chinese parts...
There's a guy on Ebay making them for the front, brand new. oldcarguy77. It's lowered with reverse eyes, but looks like the a stock one.
The guy that "solidaxle" is referring to is out of Wisconsin and a HAMB member. I bought one last year and have been very happy with it so far in my build.