replacement wheel cylinder question

[kevinshea]

I have a 35 wagon with 40 spindles and brakes... I am preparing to replace the Lockheeds with Bendix from a 56 F100.. Have all the pieces that I need. I purchased new 56 wheel cylinders from Webco and found them to be slightly different from the rusted set of 56 cylinders that I bought...

Everything looks good but the boot is shaped differently than the originals...the boot is more rounded and the dimple is much smaller diameter and extends out more. The plungers that I have don't set in like I think they should and would definitely wobble if I just went ahead. The same plungers are used from 1948 to the 70's. I checked to make sure I purchased correctly, and I seems that I did. I've gone through a bunch of others suppliers and see that same thing.

My plan is to return the new ones and try to find NOS that are the same profile. At least that is my current thinking.. Am I seeing it wrong?