bit of an overkill, he could be disscussing the posability of it being a hot water tank, or maybe a fuel tank, now there is a coincidence, i once had a fuel tank fitted to a 1962 morris mini, wow what a tank, you could open the boot and there it was, nessled neatly down in the left hand side held in place with his little steel belt and a 5/16 unf bolt, owww he looked so cute, i would stand there with the boot down and just sit and talk to him, we would discuss fuel prices and how much he could hold before a little bit would seep out of his filler cap, poor thing, i called him ivan, on occasions i would rub down his rusty bits, this used to make him giggle, i had to give his little 5/16 nut a twist and this would settle him down, anyway in 1981 dad smashed him out with an axe and burried him in the back garden, with the rest of mini, oh wot fun !