Hey Tony,
I can't tell you what they're off, Try Dr Google!
But Girlock calipers are very good calipers, I'd look at getting them rebuilt!
Repco, etc. have a catalogue of images of pads that may help!
You may be able to match up the bearing part numbers on the rotors to identify them as well as diameters, heights etc.
Other than that fit Wilwood dynapro calipers and rotors, it's a reasonably easy job, but you my have to match the bearings to your axle stubs, something I had to do!
Cheers Phil.