If the body is not cut out yet you can cut it a bit below the bottom line (raises the body). If it's cut out but not painted you can use a spoon and a hot air gun to "bulge" the body a bit to clear the speedo. It's not too difficult but you have to get it right first time. I've actually done it before sticking the speedo in place and placing something flat over the top you can then heat it up and push the body over till it fits making a perfect shape for the speedo
