got a reply from them
Richard, the bracket attatches to the bottom of the bumper with 4 screws. You need a flat spot around 3" wide by 9" long from the bottom front edge of the bumper. Keep in mind that it will add about 1.5" to the bottom when retracted, so if you are already low, you may scrape. Shipping to the UK is an additional $25. To order, just give me a call at the shop tomorrow and I'll process it over the phone,