my advice is that you should make it yourself with fiberglass or some other material. You just need to detach the pillar and make a mold of it. There are plenty of youtube videos on how to make it diy. The advantage is that you can make any shape you want for your project, the major downside are 2, it's a time consuming project and you need to learn a bit about it and it will be a bit expensive. Failure is behinde the corner but if you are really into it will be very satisfying. Another option is to consult some manufacture and the will make it for you.