Update: 12.05.11 Purchased 2 DBR slotted fronts and rears including Bendix CP pads for $699.00 and I was surprised how small the rear pads are compared to the fronts. The reason I asked about the thickness was that I had 2 new hubs machined to fit into the 16'' VE steelies and wanted to make sure I had the measurements correct. I now have the machined hubs back and they fit the VE steelies perfectly so now to purchase 4 x 16'' tyres.
I tried that but the wheels won't budge so Pedders are fitting the disc's and pads when they lower it next Thursday. The reason I asked about the thickness was that I had 2 new front hubs machined to fit into the 16'' VE steelies and wanted to make sure I had the measurements correct. I now have the machined front hubs back and they fit the VE steelies perfectly so now to purchase 4 x 16'' tyres. I still need the rears machined but need a good pair from the wreckers first as Repco said they arent available as a new unit.