To make a long story short, a few weeks ago someone ran a red light and totaled my truck in my sig. Well last week I picked up a 06 rcsb Silverado, planning on swapping the drivetrain and most the other mods. When I installed my assassin bars on my 04, I had a hard time drilling through the leaf springs and didn't want to do it again. Wanted to know if anyone knew if the leaf spring in my 04 ecsb were the same as a 06 rcsb? Both are 2wd. Thanks for the help.

 

They will bolt right in.

Not sure on the rateing but I doubt you will notice a difference.

 

crewcabs are typically softer spring rate