Long arm upgrade Q

[Mike2500]

Can anyone help me with info on a decent long arm upgrade kit. I have a 4.5" susp lift on my 09 2500. The ride is absolutely horrible, to the point I hate driving it. I figure I'd put long arms in the front and go from the stock spring and spacer to a lifted easy ride spring.

Any suggestions? Has anyone used this Synergy kit?

 

[Ratket]

carli suspension

 

[R/T_Fire]

I believe Carli only makes a kit for a 6" system, I do know they were working on something recently but not sure if it works with a 4" system.

Pure Performance makes a kit for 4" systems
Pure Performance 03-12 Long Arm Upgrade

Edit:
Synergy OffRoad makes a kit too
http://www.8lugtruckgear.com/Dodge-...dge-2003-2012-Long-Arm-Upgrade-Kit-p1067.html