I have an 2005 AC TRD Sport PreRunner with the stock suspension. My dealer won't to the rear leaf TSB since I am out of my warranty (that is a whole other thread). My question is, is there an AAL system that I can add with out to much hassle or without having to buy a whole new leaf pack? If I do an AAL do I need to upgrade the shocks all around or can i just do the AAL?
My main goal is not necessarily to any kind of lift but I want it for the added stiffness when hauling heavy loads.