I have had an Autoform wing and splitter on my car for two years. As I have become a better driver I can really notice the effects of the down force with their wing. Recently I was at VIR for Viper Days. Entering the upper esses at 120 MPH would not be possible without some serious down force from the Autoform wing. It is very adjustable to increase the angle if desired. I can't imagine why you would ever need to use it in the highest angle. Remember if you ad down force to the rear you should also add it to the front of the car, which means using Autoforms splitter. I get many compliment about how the car looks. Even Comp Coupe owners keep thinking my car is a CC as it is coming down the straight aways. There is no techincal data as far as actual downforce numbers available for any of the wings available on the market. The testing is just TOO expensive. So I guess you have to take the word of those of us that have been using Autoforms wing, in the two years I have had it on my car I would guess I have put somewhere around 5,000 miles on the car at various tracks around the country. I feel it works well. If you don't like the look for street it can be removed with a screw driver in less than five minutes. But I think once you put it on and drive around you will get so many compliments you won't want to take it off. Autoform has a very high quality wing, excellent workman ship and grweat finish. They are working on a Comp Coupe type wing for the SRT so you might want to wait, but you can't go wrong with the current product.