Dr Diff Offest Kit With Oval Track Springs

72bluNblu said

The overall design of the AFCO’s is the same the the MP oval tracks. Same length, same axle location, same number of leafs, same designed spring rate. The difference is in the actual manufacturing. The old MP oval tracks didn’t have these issues either, it’s just the current production run of MP oval tracks that do.

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the point is, if the thickness of the main leaf is different then the spring rate is different.
even better, if you have some old MP oval track springs, you can measure the main leaf and then the OP that mangled his newer MP springs can measure his main leaf and figure out if that has changed.
I put some MP SS springs on my car a few years ago, i read all the posts about the hecho mexico springs sagging and I was actually hoping mine would level out some. no luck there..