Tica, Thanks for your fast reply. I understand.
1) NI has no multiple (large) PCI card chassis.
2) I meant would the "PXI [chassis] work" and the answer is no..because it only holds PXI cards (or apparently compact PCI cards).
I was looking for a way to get a PXI chassis with a variety of DAQ and other needs, but I also need a card cage for at least 4 full PCI cards in this system.
thx, Doc K