Here are some of the other bits required for the job which I ordered through http://create3d.com.au/
They have been very helpful.
There is an extra stepper motor and a set of belts and pulleys in the kit on the left that I do not need for this Rostock project but I will be using them on my existing printer.
The Ramps controller in the kit on the left comes preassembled.
For the Rostock an additional 3 micro switches are also required.
Still to come the long smooth rods and 12 bearings (on the way from the USA) and I am yet to order the PTFE tube for the bowden extruder.