Update: I got the new front springs installed, and also set less preload in them.
Before After
After driving around with the new springs for a week, I did notice there was a nice improvement on road. Nothing dramatic, but definitely worth the price of admission. I also took out the rear kings and had the RPG shackles installed. This did little to effect the harshness
of the rear ride quality. Now I'm perplexed; I told the install shop repeatedly to torque the shackles once the vehicle was on the ground, and to a spec less than the OEM recommendations. So I assumed they had done so accordingly. A week goes by and the rear is still twerking
like a thot and the wife is on my ass. This afternoon, after a chat with RPG, I finally get off my lazy ass and adjust the shackle bolts. SHAZAM!!!!! World of difference. The truck rides like butter in the rear now. My best guess is that the shop ignored my advice and just hit everything with an impact and called it good.
It's amazing what over torqued shackles will do to the overall ride quality of a vehicle.
I just wanted to thank everyone for their input and help. I'm really glad I got this fixed.