O Ok so I figured out how far the lexan would go down the roll cage to the bottom and I used a straight edge from the bar over to the first hump then I measured from the straight edge down to wear the leaxan would stop on the bar let's say 7 inches down I then measured down on the edge of the start of the hump it was 6 inches so there is a 1 inch difference then measure that point over to the bar let's say its 8 inches then I measured the top of the hump to the bar its a 12 inches from the bar so now you now the angle form the bottom of the hump to the top its easier to do this if you put a straight edge all the way across both bars so I can't move , the whole time drawing a little scetch of the design after I got all the measurements I rechecked them son both sides and I also left myself about 1/8 inch extra on the measurements that way I can trim some off here and there and make sure it fits exact