Car Twisting

[guscorty]

Hi Guys,
I took my Car ( TC Cortina) out to Eastern Creek on Sunday . First time I raced the car with MT Street ET's.They definately make the car hook up. On take off the car twists badly. A guy watching, told me later that even the rear pasenger side lifted, way more than normal. I could definately feel it in the car. It's characteristic of these cars to do this. Does anyone have any suggestions how I can overcome this. One suggestion is that I go to a heavy spring on the drivers side rear with an air bag. The car has coil springs on the rear. Any advice would be appreciated.
Cheers