Modified our 08 Challenger
 

Like most cars we've ever had, this one managed about 150 miles before the modifications began. So far it's got Razors Edge Motorsport front and rear shock tower braces, adjustable sway bar end links, custom computer tune and a powerstack open filter.
The difference in the cars handling is amazing and with the tune the power is noticably better, what really stands out though is how much better the transmission shifts

I've go the same drivetrain in a Charger SRT-8......custom tuned on a dyno, really woke the car up! Shifts into second lights the tires up. I won't be doing all the other mods since mine's just a leased daily driver :)
(also just did the SRT driving experience with the Richard Petty experience!!!

The strut braces are a bolt on, you could remove them at the end of the lease....:)