Outer Limits 4x4 Board

Have the opporutnity of putting a extra fuel tank in my truck, its a 91 gq 4.2 turbo diesel. The tank is a 60 litre one from my mates petty lpg truck that is now straight gas.
Question is can i use this tank as an extra one which would give me 155litres of fuel. Is it a matter of just bolting it up and then having a siphon pump running it into the main tank?

Monty wrote:Is it a matter of just bolting it up and then having a siphon pump running it into the main tank?

Pretty much, but you also need a dual filler neck (available in 4b shops), or you cant fill the second tank.