rear control arm relocation brackets

I've heard about these for cars that are lowered but do they work on a car that isn't lowered? I have no desire to lower my car at all and I am happy with how it sits AFA stk. ride height but if I put these brackets on my car will they improve my overall handling of the car around the twisties and also for launching at a drag strip?

My emphasis is more towards handling over straight line bite at the track. I guess you can say I want the best of both worlds.

My car is not lowered but I decided to install relocation brackets because when I looked at the LCAs from the side, the axle end was higher than the chassis end. To be honest, I have not noticed a significant difference in traction or handling since I installed them. So far I have only run them with the LCAs in the upper hole, not the lower one.

I can't run them in my class but that's pretty much what I've heard too. Maybe a .1 or so in your 60 foot times but that's about it.