First time poster so please be gentle, had a good look round and couldnt find a similar thread so apologies if this has been asked before.
I got my bongo a few weeks ago, love it, have a family who loves to camp so have been scouting around for some self build removable units, want to keep it versatile during winter etc.
What i would like to know is, if i buy a standard kit, looking at tranzwagon units, seem reasonably priced, how could i fix it to to rear or my van without lining the floor, can you get bolts of some description that would do the job or is this a dead loss idea?
Have looked on the net for ideas but not coming up with much, any ideas or advice would be hugely appreated

Cheers
i should add that i have a 1999 model, with one long seat at the rear not split, i was hoping to try and replicate a rear conversion with wheel arch boxes and take this out when camping, but cant work out how it would secure in.
thanks