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.
The very existence of flamethrowers proves that sometime, somewhere, someone said to themselves, “You know, I want to set those people over there on fire, but I’m just not close enough to get the job done.”