Our green70 challenger is equipped with Hotchkis suspension components front and rear. My son and I have been tearing up autocross track for the last 2 summers with it. My son won Lincoln, Nebr. GOODGUYS event this summer, top 5 car the last 2 years at GOODGUYS in Des Moines Ia.; tied for 2nd at the in the Street Machine Challenge,and 3rd fastest time overall between ALL cars new and old at the Street Machine Nationals in St.Paul, Mn. a Go to Hotchkis website and our car is on their video for the event recap, pictures on their facebook page, had a cameo appearance on Detroit Muscle tv show and is on the add for next years Street Machine Nationals in St.Paul. So with that yes HOTCHKIS is a VERY good way to go, great group of guys there from people that answer phones all the way up to John Hotchkis himself (you will find him helping with autox events knee deep in the action) and it keeps the car pure to it's original suspension design. The suspension works better then most of us can drive!! LOL.
P.S. I do recommend getting there geometry corrected upper controls arms right a way, I started with just a set of adjustable type which worked very good, then switch to Hotchkis control arms and there is a noticeable difference all the way around including infinite adjustability, handling, especially at corner turn-in that you can feel. Most people can't believe it still has torsion bars. HOTCHKIS stuff works. Don't get me wrong I think alterkation stuff is good, as I was going that direction 2 years ago, but to stay pure Mopar and cheaper Hotchkis is the answer. I would put my HOTCHKIS equipped Challenger up against any Alterkation suspended,equally powered Challenger any day. Of course we race against them all the time(there called Camaros) as the alterkation suspension would be similar too GM coilover, 4-link suspension.