Steve Simmonds used to do a hood conversion to turn a 4 seater in to 2 seater with a pick up/dicky seat sort of thing at the back.
He was at Newquay in 08 with it I seem to remember.

Weren't the Maguires polish people doing a black 4 seater +8 at the Mog this year. They left one half dirty and polished up the other.