I just had the newer version of the steering box installed for my 07 2500 5. 9, it is Huge compared to the original, the sector shaft is very large as are the internals according to Dodge. I noticed a big difference in how sensitive it is compared to my older one. If you haven't seen it, you should Google it or see it at a dealer. I had mine replaced under my extended warranty thank goodness, it sells for under $700 at various places.