I have owned an 89 4x4 3.0l pickup for many years. It has bilsteins, 31" bfg a/t. Magnaflo exauhst cat back, and downy intake. Now have 360,000 miles on it and running strong. I just added a 96 4runner 2wd 2.7l. I want to start with getting some 31's on it and bilsteins asap. Do I need to do...