Hi Lance
I fitted a painless unit under my dash, I got it from
Castle Auto
Why don't you consider using an internal clutch slave cylinder.I've got a Mcleod unit in front of my ZF and it works very well. I thought of buying those parts for the external slave until I checked the price. I am of the firm opinion now the best thing with ZF is don't fiddle with parts more expensive than buying a new one off RBT.Might be able to give you some shifter tips too.
Ross