I can't remember exactly how much play I had but I pretty sure I got more than that. Do you think the 18's killed it? Mine has a 3.27 rear end gear. If I have to replace it I wanna put in a euro 2.87. When I changed the fluid it was green (?) for some reason. I don't think it was every changed before. Maybe later I'll check it, I know if I leave the car in park and push it I can rock it back and forth about an 1" or so. How much play are these things supposed to have?