I had Discount Hitch do the install. They are a Blue Ox Authorized Dealer and could do all that I needed. There are a number of them in the Houston area. Check on Blue Ox's website for a dealer near you. Then call them to be sure they have everything you need in stock and are able to work with a bus and toad your size in their lot?
I think the labor was about $300. I don't have the invoice here it is on the bus.
Good Luck I think you will be happy with this system.
Gary S.