So Rough Country has replacement torsion bars that give a 1.5" lift. How do they achieve this lift? Will it be like cranking torsion bars where it alters wheel travel and affect ride quality? Im asking because Im looking at getting a 88-92 Silverado or 92-94 Blazer but want to use the new (less than 2000 miles) 35x12.5x15 BFG M/T's I have on my current truck (73 K20). Im looking at maybe a 3" body lift then some type of ssupension lift of 1-2" then have my friend make the tires fit.