I bought an enclosed trailer that is higher than the typical model, but with the height came 2 small windows on each side over the wheels. I like the extra height because I can stand up without crouching over, but I'm not crazy about the 2 small windows. I'm thinking in the future of taking them out. I assume I would have to replace the whole aluminum piece that the window is in. How expensive would this procedure be? Thanks for the help.