Negative camber on the frontwheels, lower front than rear springs and good tires at the front will provoke 'lethal' understeer when an LSD or welded diff is mounted.
Or otherwise there's allways the monkey solution: clutch dump
It really is. In my first driftcar (not laugh it was a Volvo 360 www.volvo360.tk ) I used to clutchdump a lot, because I bought the car for 99 euro
But when I started to drift more seriously... and in other's cars, I refused to clutchdump. Someone passed me his E30 M3 some day to do some drifting and teaching. It had so much grip.... it took me 5 minutes or more to figure out how to drift that car clean, without touching the clutch. But in the end it will pay off, your drifts will be awesome and the clutch will stay in one part!