Hi mate,
I have one of these and to be honest mine has been great. I decided to mount mine slightly lower that normal and drill new holes so i didnt have to drill my new galvanised body capping. I'll try and find a picture if its any help?
For a space at the base i used an old bracket fromt he told of a rear cross member
here is a rough photo, i have just changed the rear cross memeber and am refitting carrier so I try and geta better picture