I have a front brace and am looking at the arched rear brace. I am wondering if people who have got one noticed a difference and if it worth the hassle of cutting up you rear trunk liner....
I have one in my 2015, that I took out of my 2010. Search YouTube for Hurst upgrade for 2015 Challenger, and you'll see 3 of my videos. They contain photos of my trunk. I let Car Toys cut two very nice holes into the trunk liner to install my Mopar rear tower brace. Well worth it. Just not so much fun if you do it yourself. I've tried. $100 for the install. Check your local Car Toys.
'12 SRT8. I have both the front and rear four point braces and subframe connectors also, all from Razor's Edge. The car already had KW coilovers. There is a major difference in handling and ride is unaffected, IMO. I would definitely recommend doing both the front and rear braces. I like the Razor's Edge product, but there are plenty of other good ones.
But a twisting unibody is good especially in rain like condition it gives the car a bit of compliance inherently which is needed when doing spirited driving under the rain.