You can still get solid Aluminium bar, they just seem to be out of stock of the thick wall hollow bar...@LukeTheJoker posted a link, AU seller.
All gone it seems Looked perfect for me.
Thanks for the info!A friend of mine always had the seat post way high and they would bend until we reinforced them. We used a piece of tubing or pipe and inserted it inside the post, using a size close to the post. Then I cut a small tab in the post on the bottom lip and folded it under to hold the tubing up in place. We even tried a piece of square stock hammered in the post which worked also.