I don't have a 60NX but do have a couple of 55AX's. On 2 of them I use an 8 oz. tank and the 3rd one has a 10 oz tank. I think a 16 oz. tank might be a little unrealistic for most folks on 60 size glow... ? Still that should be a great engine for the Katana. I like the instant throttle response that gas engines usually have for 3D. (very 4-stroke like!)