Front lift blocks prohibited. Rear lift blocks must be of single piece construction, not use more than a 3" spacer, and not exceed 4" in height between the rear axle and springs in addition to those provided by the original manufacturer. Spring shackle replacements may not exceed original  length by more than 2" and coil spring spacers prohibited. Welded pitman arms, drag links, and tie rods are prohibited.  

Max. vehicle height loaded or unloaded not to exceed 13' 6".