McGaughy Rear Springs for Tahoes, Escalades, and Yukons?

[KillerStudio]

Are there really different springs between the non-autoride and autoride trucks? I'm a little confused because 1 technician told me the difference between the 2 kits (300008 (non autoride) and 300009 (autoride) are the rear springs and one technician told me that they are the same springs. Can someone verifiy what springs came with their 300009 and 300008 kits?

I looked at the pedders springs and it looks like they use the same rear spring for all tahoes, yukons, escalades, avalanches

http://www.streetperformance.com/part/pedders/coil-spring/1260504-2425.html

 

[Modded]

There is a difference, one comes with Autoride height sensors and one doesn't.
The other difference is you need shock extenders to run the autoride shocks too.