99% of the parts anyone is likely to need are available without too much searching. Even the front hexes that nobody can allegedly find. Just need to know where to look.
Only parts that are special order are the top decks, chassis and the aluminium gearbox tops/bottoms
http://www.ebay.co.uk/itm/Tamiya-541...item35b535237b
http://www.ebay.co.uk/itm/Tamiya-DB0...item519b59ee3c
http://www.ebay.co.uk/itm/Tamiya-541...item1e65340ea6
http://www.vellrip.com/store/product....asp?p=1481&c=