996 vs bug back end

[ricola]

I'm sure it won't be based on disc to disc measurement.
I was speaking to Mike Ghia about this earlier, he has bought a 993 rear end for his project car. He says track is normally measured at the centre of the contact patch which would make sense. More so when you see that track gets narrower with wider wheels, I guess they bring more of the width inboard than outboard.