A slim jim actually still works on the fox cars.
You have to bend the tool about 1/2-3/4 inch just above the notch and when you slide in above and just forward of the door lock with the bend towards you, watch the lock head to move around then you know you are against the lock rod, you can pump the slim jim up and down and it should grab the rod and pull it up.
I can get into one in seconds but I've had a ton of practice.
When you bend the tool visualize how the notch will grab the rod, you want just enough angle for the rod to fit.
Use soap on the tool and your window rubber should be ok, and it keeps from scratching the glass, I've also used a plastic drink lid between the glass and the tool and it won't scratch the glass.