I had mine built by UK trailers in Rotherham. He will build to your specification. Mine was built 10 foot long 5 foot wide 6 foot high. With a ramp for the rear door which he reinforced for the Harley. I also had 13inch wheels with bigger bearings fitted. It cost ?1700.00. I fitted my own hooks on the floor and bolted through the chassis and the trailer has been brilliant. Light enough to push on my drive. My advise is to go covered trailer as I had an open one and the bike got covered in mud in bad weather. U K Trailers number is 07852 823301.