Just make sure it's NOT front wheel drive. Unless it's a TRUE limited slip diff, and you have slicks, you're wasting your time. I don't care if you have 280 or 500 horse power, you're not going ANYwhere in an open diff FWD car. You're wasting your time & money by upping your HP in that platform... Trust me, I've already been down that road in my GS. Dyno numbers mean absolutely zero on the road.