Here is a few pics of mine mate when i cut the middle out i plastic welded
some of the centre bar in to cap the ends off so that they are nice and smooth i put some fiber glass in th back to make it nice and strong, For the lower part of the bumper put an rs style slipter which i got from RJM MOTORSPORT i got the number out the back of a fast ford mag mate
HOPE THIS WILL HELP YOU MATE