Not really. The front Safari tank is an over top tank, a fair bit different to what is available for say, the KTM EXC bikes which use a standard type of fuel tank and a number of manufacturers makes a number of different size tanks to suit nearly every occasion. The oem tank is taken off and replaced with a larger aftermarket tank.
The 2013 Bergs/KTMs will have a bigger and better range of tanks available than the 70 degree Bergs ever did.
"I reckon it would be good getting a heap of XR's in the one spot and watching a heap of blokes kicking fuck out of there bikes and swearing."