Most of us would like more fuel capacity-
Rally Raid do 4.5 + 4.5 up front and 5 on the rear rhs, so thats 14 + the stock 12 = 26
Safari do a 14 which is mounted high + the stock 12 = 26

Dalby Moto in Oz - http://www.dalbymoto.com.au/images/stories/otflyers/KTM%20700RR%20Test.pdf
 - have made 9 + 9 up front + the stock 12 = 30

They built these tanks for their Rally kit, however they've just released a 2/3rd kit for $4390.00 aud which include the tanks, rally exhaust, skid plate etc -  see pics below.

I've asked them if they would do a 1/3rd kit, basically just tanks only to suit the stock exhaust as personally I don't want the low rally type exhaust.
Would anyone else be interested in an additional 18 liters to suit the stock exhaust?
If I can show them there's interest they might consider doing these tanks for the stock exhaust......

Would anyone else be interested?
The good points are how the extra fuel is carried low and the bottom of the tanks has a carbon fibre guard.
I was talking to the manager of the company that builds these and he said the build quality is better than other long range fuel tanks offered on the market.
If interest was shown it would help persuade them to consider modifying the mold to suit standard exhaust configuration.