[Hammered]

I am trying to understand what Pontiac did to make the 69-72 GP have a wider track width in the front. The A-body cars of the same era have 59" front track widths whereas the GP had a 62" track width. They share A-arms, spindles and rotors and from what I've found elsewhere online, the frames are the same width in the front. Finally, the wheels across the different platforms seem to have about the same offset. How did they do it?

Similarly, the '68-72 GTO has a 2" wider track in the front than all of the other A-bodies.