I think the max you can get without a drop is about -1.1, but I see that eyeman got -1.8. I would go with Velocity Motorcars adjustable control arms and toe link. The reason is, because toe in the rear is very difficult to adjust when the car is dropped without these adjustable arms. The best benefit is that you will be able to adjust camber to -2.5 in the rear!!!
http://www.velocitymotorcars.com/e82...trol-arms.html