Question on predator backpack

[ksj]

I was looking at ways to add on the backpack. Initially I though webbing with orings would work but I have seen others used empty alice backpack frames as the base to great effect.

What has anyone else used as their base to secure the predator back and pack accessories?

 

[ksj]

And here is an example of such a frame:
FOX Outdoor Olive Drab LC-1 Alice Pack Frame - 54-015

With all of the add ons to it, hiding the actual tubing and webbing, is easy...