I found a solution, after being in contact with powerflex and giving them the dimensions of the bush size i needed, the closest one they found was for a Saab 900. They suggested modifying it to suit my purpose. For a start the sleeve for the bush was too small so would need to be enlarged to accept the size needed. Upon arrival the bush seemed loose in the whole like it was about 2mm out. I had a good friend make me a top hat washer to accept the larger bolt and match the size of the original rs-r top hat bush. Some photos for anyone interested. It has yet to be cleaned too. Here is the original bush, And the new powerflex one with a new top hat washer,