Questions About My 2012 Gt

I just resent bought my 9th mustang, this one is a 2012 GT.
I'm no stranger to fast vehicles so after having the car for 2 weeks i decided to stretch her leg last night. I was playing around doing 20 rolls in 1st and a couple 2nd gear pulls. Finally I decided to see if it had a governor and layed into it pretty hard. About 130mph the ass end felt squirrely and had me all over the road.
I checked the rear sway bar to see if was loose or needed bushings but it seems fine.
I'm wondering if anyone else has had this problem or knows how to keep it from feeling so loose.
 
Welcome to Stangnet.

Like JR was saying, look around our '05-'14 subforums, there may be an answer already there for you. If you can't find it, start a new thread there with this question. Someone will know.

It's good to have you with us.