Sorry i can't tell you.. I need to do mine.. last time I looked.. sure looked like it has to be 2 piece.. just really chiming in.. to tell you.. what a beutifull rv you have.. I also have 1993 hi top ford conversation van.. but your is what I should have got.. in 1993 it was 5,000.00 cheaper than my van... with all the rebates they had then.. yes still have 1993 and its daily driver today.. oh.. by the way.. they are really fragile.. so be careful..
Good luck and let us know what you did and maybe better members then me will help you
2000 southwind storm, workhorse custom chassis with 7.4l vortec