today amiga bracket for 4000D drives for sale, as it is a prototype, it may not fit perfectly and you may need to adjust it, generally it can be mounted without major problems. the only difference with the original is that the 5.25 drive mounting points are not bent and you need to use rubber spacers or some other, details in the photo.
the price is 20 euro + shipping (pp as friend)
https://www.dropbox.com/s/p50gmb43zkhxp6y/20210222_083305.jpg?dl=0
https://www.dropbox.com/s/u6u9vk7n5lqj8rn/20210222_083414.jpg?dl=0
https://www.dropbox.com/s/qxsksmprxiahuyt/20210222_083430.jpg?dl=0
https://www.dropbox.com/s/eo5q0qrnrrig1cq/20210222_083615.jpg?dl=0
the price is 20 euro + shipping (pp as friend)
https://www.dropbox.com/s/p50gmb43zkhxp6y/20210222_083305.jpg?dl=0
https://www.dropbox.com/s/u6u9vk7n5lqj8rn/20210222_083414.jpg?dl=0
https://www.dropbox.com/s/qxsksmprxiahuyt/20210222_083430.jpg?dl=0
https://www.dropbox.com/s/eo5q0qrnrrig1cq/20210222_083615.jpg?dl=0