110 rear interal dimensions required

Hi all first time posting here and hoping to get help.

I'm looking in to possibly getting a 110 round about mid to late 80's
and need the rear internal dimensions to way up what i cant possibly do regarding turning it into a 4x4 camper so i can go green laning and do the usual festivals.

Thanks to any one who can help me.

If you want to turn it into a camper here is the ideal solution.

Landorver 110 Roof and Sides with Elavating Camper Top on eBay (end time 26-Jul-09 12:25:05 BST)

just checked out that camper roof and i've got to say i like it.