I designed these kits to fit vy/vx/vz/vt and even earlier model holdens since the hub designed pretty much carried over from the 80's. The pads used on these are my 2009-2013 cadillac ctsv front and rear, although the rear pads can be attained easily thru places like gsl & other places. The rotors are the ve redline front 355mm rotors (dba 42604 type) and ve hsv rear 350mm dba42031 type rotors, rda makes replacements front/back as well, which you can also get thru gsl. ANd the rotors need to have the hub clearance holes opened to clear the larger vx/vy/vz/vt hubs.
There's guys beating the bejesus out of these on tracks stateside/au/nz , biggest thing after the obvious meaner look your car has is the brake bite and fade, you'll get bored of running continuous laps not worring about brake fade.
Kinda sad to see that you're parting with it but hope it they find a new home.