Decided to see how this frame, straps and belt looks with a standard Large ALICE pack bag. It is a large improvement over the stock metal frame and LC1 straps. Set up is identical to FILBE set up. Undo the top buckles of the shoulder stabilizer straps, slip ALICE bag over frame and yoke, then connect buckles. Strap the lower corners to convenient slots on frame. Viola! Color may not be ideal, but with coyote colored commercial ALICE packs out there, should be ok. 
Simple shot showing frame side
Top view
Sideways views.
Cascade Tactical 