mtoroshanga,
Re #1338, 100 gal tanks on the inboards pylons, which is what WV372 had, is my preferred configuration for displaying a Hunter because you have more forward stick authority for negative g manoeuvres (slow rolls, inverted passes etc) than in a totally clean aircraft. There are no detrimental flying qualities aspects at all and the limits are the same with and without these tanks. With respect to whether or not they contain fuel, again there are no differences in the limits so it is just an all up mass concern.