HJ60 series subtank options

You can get I think up yo a 90it aux tank.

No standard option as far as I know, but can still get 150 - 190L replacement tank or up to 70L sub tank after market from the usual suppliers - ARB, Long Range Automotive etc.

Cheers, Dave

Try TJM. usually fit a larger tank underneath and move spare wheel onto a rear bumper mount. Or you can get a mid mounted sub tank, as was quite often done with LPG conversions on the petrol jobbie.

I have heard somewhere of people buying a standard tank for a 60 and fitting it as a sub, I am not sure where you'd put it or what shape it is.
NickR