Same here. I just rolled the dice and it worked out. If No ROPS it would make it easier-it Fully supports itself. The back two posts are in holes that were already in the tractor, just made them slightly bigger (I think the flashing lights were there once). the front posts are basically locked into the floorboard with some clips that came with the kit (plus a few extra holes for some spring clips). Trimmed about 6" off the bottom of the whole thing on the sides as it was too long (overhung the fenders). A few zip ties sure.