Ok, here are the components I've managed to source out so far.

2 x 12v Gimson GR02 motors
12v 3700mAh NiMH battery
Transmitter and receiver package from Scot-Bots (the people who supplied my current bot)
50mm bore, 100mm stroke ram
2 x 12oz paintball CO2 tanks
125mm Banebots wheels


There are, however, a few things I still need. If anyone can point me toward some good, low-cost ESCs it would be much appreciated. Also, would 5mm aluminium be sufficient enough armour for non-spinner battles?