I am ready to purchase the rancho 4 inch lift and have it installed on my h3 the problem I'm having is I want the 4 inch but 4 wheel parts as well as trail duty advertises it as a 3 inch lift. The shop I went to for my install gave me the part number RS6558B which is the same as trail duty and 4 wheel parts.They are telling me this is the 4 inch kit and they are sure of it. I already have my T bars cranked and want to net 2 more inches of lift and for the price of a rancho I just want to be sure that this truely is a 4 inch lift and not the 3 inch. Any advice you can give will help me out alot. Thanks