Car: 2006 Chrysler SRT8
Join Date: Apr 2007
Thanked 2,239 Times in 2,032 Posts
That kit should fit your car as I don't believe there were any changes to the suspension for 2015. I'd check with Eibach just to make sure.
With MDS equipped cars, the best course of action is to get freer flowing mufflers and replace the stock units. Straight piping sounds good...for a while but the downside is a loss of torque. You need some mufflers in there to promote exhaust scavenging. By all means leave the resonators on. What's nice is you can try the straight pipe and if you don't like it, you aren't out that much money.
Get a good cold air kit, such as a LMI or AFE. Watch out for those cheapo eBay specials...the filters come apart and you end up sucking filter material into your engine. Not a good thing.