So, looking at the Leader website I see the 735TR track frame, with a slightly ovalized downtube and what looks to be replaceable steel dropouts. However, all the ebay 735TR frames have aluminum dropouts and a huge downtube. The ebay pages also proclaim they have the 2007/08 frames, which I'd assume leader would be showing on their homepage.
Which is which? I'd really consider those shown on the leader website, but the ebay versions are far less appealing.