okay, i'll bite...
i believe most people on this forum will tell you to get yourself a "softride" kit from skyjacker. part no. D692CDK will get you new 6" front springs, a 4. 5" block to replace the factory 6" block in the rear, and some add-a-leafs to boost your factory rears.
alternatively, you can get part no. D692CDKS, which will get you the same as above except you get new springs for the rear instead of the add-a-leafs... something i would opt for if it was my choice to make. i'm not a fan of add-a-leafs... ever!
can't tell you about skyjackers since i don't own them. perhaps some other folks will cough up their experiences for you. don't quote me on the part numbers if you end up with skyjackers, but whatever you do and wherever you go for springs make sure they know you got a cummins under the hood! if not, your new springs will likely sag under the weight. :{
good luck!
roy