Well if you know of a good welder, you can add the same size alum tubing to the desired height. May not be that pretty on the welds though. You can also shorten the width by cutting out the center's and re-welding to the desired width.....Where I live there are many people that specialize in bimini tops.....Probably cost you around 150$ for a brand new one custom fit for your boat....and you can pick the color of material for the top to match your boat.