ADDING A SEAT TO A ROADTREK POPULAR 190

[mweav]

I RECENTLY BOUGHT A 1998 POPULAR 190 DODGE RAM 3500. HAS ONLY THE DRIVER AND PASSENGER SEATS. I GUESS I THOUGHT THAT THE SEATS AREA IN THE BACK WAS BELTED OR AT LEAST HAD ANCHORS FOR BELTS. I AM THINKING OF PUTTING A BENCH SEAT ACROSS THE VERY BACK. HAS ANYONE EVER TRIED THIS OR HAVE ANY EXPERIENCE OR SUGGESTIONS ? OBVIOUSLY WILL HAVE TO MAKE SOME MODIFICATION TO THE TWIN BEDS ON THE SIDES BUT ALL THIS IS JUST WOOD AND STEEL AND CAN EASILY BE CHANGED. ANCHORING THE SEAT IS MY CONCERN. WANT IT TO BE BOLTED TO THE FRAME. REMOBABLE WOULD BE NICE IF I KNEW WHERE TO GET THE FLOOR ANCHORS FOR REMOVABLE SEATS.
ANY HELP APPRECIATED.