Recumbent frames

I have a bunch of parts laying around from previous bikes that I have enough to build a bike if I found a frame. So since I was wanting a recumbent, I was wondering if anyone knew of any manufacturers that sold just the frame. I have looked but no one seems to sell just the frame (or they sell tadpole frames which I don't have the wheels for...that's the fallback plan but for the price of the frames I found I could buy a complete tadpole trike). Thanks in advance!

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'06 Cannondale R700