Bump steer.
It is not recommended.
Go down the Mustangs of Melbourne caliper bracket route.
see below, I have attached a previous post outlining what you need.
********************
Job done in a couple of hours!!!
Thanks to all for advice.
Just for others looking to do the same, here is a recap of parts to use
if you want to do a bits and peices (or cheap way) of converting a 65-6
from front drums to disc.
*Mustangs of Melbourne caliper brackets.
*XW rotors (especially if running rally style wheels)
*XW wheel bearings/oil seal.
*VK/L Commodore calipers with their hose and bolts as it bolts straight up...
Easy job, you just need to buy 6 grade 6 bolts and nuts to bolt up the Brackets to your stub axles.
I had some trouble with the suggested Gemini Booster/XB Master Cylinder combo, so I have decided to buy the Booster/Master combo the Mustang
parts people sell new, just easier...:(