Other Acerbis 6 Gal Tank

Im gonna be doing a Death valley ride in a couple of weeks and see that Acerbis makes one. Anyone have this, how does it fit, any problems? Anyone got one for sale or loan?
Have you seen the tanks being made by Safari tanks? They have tanks that take the place of side panels/number plates that swoop back to the fender and may be part of the reaffender too........... but I don't know how many gals they are.