suspension problem

[SidewaysSlider]

I have a s13 coupe. After a local drift event, I was driving home when i noticed that whenever i accelerate, the car would pull to the left pretty hard. And when i release the throttle, the car will pull straight. A buddy of mine told me that its probably the subframe bushings that are worn out. He told me to install subframe spacers and that would reolve my problem. Well, I did it and the problem still remains. Oh, and there's also a rattling noise coming from the rear when i accelerate too. Does anyone have any solutions or ideas??.. thanks!