Hey Andre, sounds like you are really trying to sell your Challenger on this gig? Every thought that maybe they are looking for a Challenger they can refit with custom suspension so they can put it through the paces in the extensive "speed bump testing" program?
Think speed bumps at 10, 20, 40, 60, 110, 150... and yes... a speed bump testing first... 170 mph suspension travel rate. Of course in order to get a good cross sectional sampling the Challenger donor car will be tested on speed bump designs across the entire specification of speed bump criteria designed for private, residential, municipal, commercial and even industrial uses.
On the upside... durability will be proven out in the testing process. Good luck with that...
All kidding aside Eibach seems to have very highly regarded products with very good reviews. They probably have some great mods coming for the Challenger lineup. 