Hi, good work.
As a note G4s from QS2002 & up generally use Cable select for jumpers, but the newer IDE cables may work with jumpers set otherwise, as the cable handles the Master/Slave positions.
Make no mistake, the DP 1.0 GHz Quicksilver will support large drives unless it has a logic board that was replaced with that from a non-2002 machine.
Any drive connected will be jumped (properly) to Cable Select, with the desired "Master" drive on the end connector of the IDE cable.
I have yet to run into any 2002 QS that didn't support large drives (I have 6 around and have sold another half a dozen or so). I don't know that any 2002 machines were ever shipped without the necessary firmware version.
There were some very late model non-2002 QS machines that had large drive support. They had a different (later) firmware version than all earlier QS models.
Even so, except for the rare exceptions, as stated, from QS 2002 through all MDDs, large drives are supported.