So after fighting wheel spin and crappy 60's at the drag strip for a while I went to a different track. They do more traction prep and I dropped a little more pressure in my drag radials. I finally got it to hook hard for a strong launch and BOOM! The launch was stronger than the welds on the rear end housing. It twisted the center section on the axle tubes and poked a big hole in the back seat.
I called up a friend with a trailer and got it towed home... Now I'm in the market for a new (stronger) rear end housing!