Hi,
I don't know where to order, but...
I made a track for the sliding pannel doors in the galley of my e-35. I cut a strip of mahogony that would fit in the space, and used a table saw to cut the grooves for the track. This turned out nice. I don't know if this would work for you. My friend replaced his slider doors with a plastic mirror material.. It looks pretty sharp. He purchased the material at tap plastics in the Bay Area.