What's the difference in the new FMS gearsets?

[Nobody]

M-4209-G410M
vs.
M-4209-G410A

So what did ford do to the new "M" to make it cheaper? Anyone have any clue?

Thanks,
Gabe

 

[whtpny]

I think it has something to do with the way it is made. Better steel and better tolerances. That is one of those things you definetley want to go with Ford on.