I have an 08, just over 40K. Bought it certified pre-owned(still under the 3K warranty), so I am going to try to get the TSB rear springs, but I am not holding out too much hope. I will know more on Friday.
Assuming I do not get the TSB leaf - What should I do?
Truck is 90% highway daily driver. I semi-regularly will have a couple hundred lbs in the bed, but rarely over 200lbs in camping gear, bikes, etc.
Occasional (hopefully never) will have a motorcycle in the bed, and also some towing. I dont have my own trailer, so for the time being, I am borrowing one of my dads. Usually it will be a 16' dual axle, weighing about 1200-1500lbs. Sunday I towed a pallet of pavers (672 5.5x5.5", total weight of 3000lbs) so a total of about 4200-4500lbs. Had them loaded properly, weight over the axles. Truck was bouncing around like crazy at speeds under 30mph, but seemed to smooth out a bit once a bit faster, with less "around town bumps".
Was nose-high in this configuration, and think a stiffer/stronger rear end, along with some bilstein shocks will go a long ways to helping.
I expect to get Bilsteins all around, probably set at .85 or max of 1.75 up front to keep the ride nice for the commute, so I dont really want more than 1.5-2" of lift. I just want a stiffer rear end for loads, a better ride (if possible). I was thinking of a progressive AAL pack, but read I would lose payload and towing capacity - I do not want to do this. I may get a small camper in the future, and want to keep the towing/tongue weight capacity up.
So, all that said, what are my best options, and will I be better off with shocks other than the 5100s?