stu,its the top bolt,but once all in place its to long to get out,i ground wee bit of roll bar,that was enough,but if hadnt fitted was going to drop diff etc and grind bolt,i think you be best fitting mount to diff,see where the top bolt tightens up to,its the top edge that fowls,nearest the floor,mark bolt,then take it out and buff a chamfer on that top edge,then if still not fit you can buff wee bit of roll bar in situ,col93saphcos