I have a lift built buy Over Bilt Lifts Co. that uses 2 additional receivers for the hitch, so this may help with the load as Jon has stated. The 8" is correct. I have not used the lift, when I bought the bus the owner gave it to me. He use to carry a full dress Harley on it plus a Suburban toad. The company is still in business and has some neat products. (overbuiltlifts.com) 1-866-382-1369