After some more thinking I decived dual input and dual output as with you Radeon is best.
It also looks even better:
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Back block is a mirror image of the front block
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View as it would be from the front of the PC.
I guess I forgot to mention one reason I am not to worried about weight is that the AGP card will be vertical, and the motherboard parallel to the table surface.
/Edit changes images to Rev4
I added a acrilic tube retainer that I will make.