I posted about the drop tanks.
I said I had heard they could carry 45 or 90 imp gal tanks, but I only have 1 picture.
It shows armourers putting a tank onto a typhoon. The tank appears to be connected directly under the inboard cannon, and there are 2 rockets as well, the first of them directly under the outer cannon.
The rounded front of the tank sticks out in front of the wing, and the rear of the tank seems to be a bit ahead of the back of the wing, so overall it seems the tank is as long as the wing is broad. I dion't know what capacity that is.
When I posted this Hitech or somebody from HTC said that the tanks should be included soon, but there was no answer when I asked if we could have tanks and rockets together.
In case anyone has the book, it is called
Aviation An Illustarted History by Christopher Chant.