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55trucker for a topic
The Ford rotor *hat* is shorter, the overall height of the Ford rotor is only 1/4" more than that of the W rotor.
The Impala rotors bolt circle is 118mm (4.6"), the W rotor is 115mm & the Ford is 114.5mm (4.5").
The Ford rotors pad surface thickness is near identical to the W rotor thickness 1.040" vs Ford 1.101".